GHA: silence proselint warnings and an error

Fix new issues found by `proselint`.

Also:
- silence this technical warning:
```
:0: DeprecationWarning: /home/runner/.p

GHA: silence proselint warnings and an error

Fix new issues found by `proselint`.

Also:
- silence this technical warning:
```
:0: DeprecationWarning: /home/runner/.proselintrc was found instead of a JSON file. Rename to /home/runner/.proselintrc.json.
```
- fix an input filename.
`proselints` fails now if an input file is missing.

Reported-by: Jay Satiro
Bug: https://github.com/curl/curl/pull/15291#issuecomment-2410505100
Closes #15293

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MANUAL.md: wrap two example urls that overrun styling

Closes #14149

reuse: add copyright + license info to individual docs/*.md files

Instead of use 'docs/*.md' in dep5. For clarity and avoiding a wide-
matching wildcard.

+ Remove mention of old

reuse: add copyright + license info to individual docs/*.md files

Instead of use 'docs/*.md' in dep5. For clarity and avoiding a wide-
matching wildcard.

+ Remove mention of old files from .reuse/dep5
+ add info to .github/dependabot.yml
+ make scripts/copyright.pl warn on non-matching patterns

Closes #13245

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docs: use present tense

avoid "will", detect "will" as a bad word in the CI

Also line wrapped a bunch of paragraphs

Closes #13001

MANUAL.md: fix typo

Closes #12965

badwords: use hostname, not host name

and username, filename - consistently. Fixed the patterns in
badwords.txt to catch these.

Closes #12888

docs: do not start lines/sentences with So, But nor And

Closes #12802

GHA: add a job scanning for "bad words" in markdown

This means words, phrases or things we have decided not to use - words that
are spelled right according to the dictionary but we want

GHA: add a job scanning for "bad words" in markdown

This means words, phrases or things we have decided not to use - words that
are spelled right according to the dictionary but we want to avoid. In the
name of consistency and better documentation.

Closes #12764

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tidy-up: use more example domains

Also make use of the example TLD:
https://en.wikipedia.org/wiki/.example

Reviewed-by: Daniel Stenberg
Closes #11992

docs: replace made up domains with example.com

in FAQ and MANUAL.md

- example.com was made for this purpose.

- reduces the risk that one of those domains suddenly start hos

docs: replace made up domains with example.com

in FAQ and MANUAL.md

- example.com was made for this purpose.

- reduces the risk that one of those domains suddenly start hosting
something nasty and we provide links to them

Closes #11986

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MANUAL.md: change domain to example.com

Closes #11866

docs: change `sub-domain` to `subdomain`

https://en.wikipedia.org/wiki/Subdomain

Closes #11793

MANUAL.md: add dict example for looking up a single definition

Closes #11077

docs: minor polish

- "an HTTP*" (not "a")
- remove a few contractions
- remove a spurious "a"
- reduce use of "I" in texts

Closes #11040

docs: note '--data-urlencode' option

Closes #10687

MANUAL.md: add pipe to apt-key example

Closes #10170

misc: typo and grammar fixes

- Replace `Github` with `GitHub`.
- Replace `windows` with `Windows`
- Replace `advice` with `advise` where a verb is used.
- A few fixes on removing

misc: typo and grammar fixes

- Replace `Github` with `GitHub`.
- Replace `windows` with `Windows`
- Replace `advice` with `advise` where a verb is used.
- A few fixes on removing repeated words.
- Replace `a HTTP` with `an HTTP`

Closes #9802

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docs: spellfixes

Pointed by the new CI job

docs: updates spellings with full words

Closes #8730

docs: capitalize the name 'Netscape'

Closes https://github.com/curl/curl/pull/8354

docs: grammar proofread, typo fixes

(Partially automated) proofread of most of the documentation, leading to
various typo fixes.

Closes #8353

docs: address proselint nits

- avoid exclamation marks
- use consistent number of spaces after periods: one
- avoid clichés
- avoid using 'very'

Closes #8060

docs: reduce/avoid English contractions

You're => You are
Hasn't => Has not
Doesn't => Does not
Don't => Do not
You'll => You will
etc

Closes #7930

docs: reduce use of "very"

"Very" should be avoided in most texts. If intensifiers are needed, try
find better words instead.

Closes #7936

metalink: remove

Warning: this will make existing curl command lines that use metalink to
stop working.

Reasons for removal:

1. We've found several security problems an

metalink: remove

Warning: this will make existing curl command lines that use metalink to
stop working.

Reasons for removal:

1. We've found several security problems and issues involving the
metalink support in curl. The issues are not detailed here. When
working on those, it become apparent to the team that several of the
problems are due to the system design, metalink library API and what
the metalink RFC says. They are very hard to fix on the curl side
only.

2. The metalink usage with curl was only very briefly documented and was
not following the "normal" curl usage pattern in several ways, making
it surprising and non-intuitive which could lead to further security
issues.

3. The metalink library was last updated 6 years ago and wasn't so
active the years before that either. An unmaintained library means
there's a security problem waiting to happen. This is probably reason
enough.

4. Metalink requires an XML parsing library, which is complex code (even
the smaller alternatives) and to this day often gets security
updates.

5. Metalink is not a widely used curl feature. In the 2020 curl user
survey, only 1.4% of the responders said that they'd are using it. In
2021 that number was 1.2%. Searching the web also show very few
traces of it being used, even with other tools.

6. The torrent format and associated technology clearly won for
downloading large files from multiple sources in parallel.

Cloes #7176

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