giftopnm: add page

[iamanurag101]

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page(s) have at most 8 examples.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known):
  issue Let's document: Netpbm #10887

[tldr-bot]

The build for this PR failed with the following error(s):

pages/common/giftopnm.md:
Error: Parse error on line 4:
...t/doc/giftopnm.html>- Converts a GIF i
-----------------------^
Expecting 'END_INFORMATION_LINK_URL', got 'NEWLINE'
pages/common/giftopnm.md:3: TLDR004 Command descriptions should end in a period
pages/common/giftopnm.md:4: TLDR011 Page never contains more than a single empty line
pages.en/common/giftopnm.md:
Error: Parse error on line 4:
...t/doc/giftopnm.html>- Converts a GIF i
-----------------------^
Expecting 'END_INFORMATION_LINK_URL', got 'NEWLINE'
pages.en/common/giftopnm.md:4: TLDR011 Page never contains more than a single empty line

Please fix the error(s) and push again.

[CLAassistant]

All committers have signed the CLA.

[tldr-bot]

The build for this PR failed with the following error(s):

pages/common/giftopnm.md:
Error: Parse error on line 4:
...t/doc/giftopnm.html>- Converts a GIF i
-----------------------^
Expecting 'END_INFORMATION_LINK_URL', got 'NEWLINE'
pages/common/giftopnm.md:3: TLDR004 Command descriptions should end in a period
pages/common/giftopnm.md:4: TLDR011 Page never contains more than a single empty line
pages.en/common/giftopnm.md:
Error: Parse error on line 4:
...t/doc/giftopnm.html>- Converts a GIF i
-----------------------^
Expecting 'END_INFORMATION_LINK_URL', got 'NEWLINE'
pages.en/common/giftopnm.md:4: TLDR011 Page never contains more than a single empty line

Please fix the error(s) and push again.

[tldr-bot]

The build for this PR failed with the following error(s):

pages/common/giftopnm.md:6: TLDR005 Example descriptions should end in a colon with no trailing characters
pages/common/giftopnm.md:6: TLDR104 Example descriptions should prefer infinitive tense (e.g. write) over present (e.g. writes) or gerund (e.g. writing)

Please fix the error(s) and push again.

[tldr-bot]

The build for this PR failed with the following error(s):

pages/common/giftopnm.md:6: TLDR104 Example descriptions should prefer infinitive tense (e.g. write) over present (e.g. writes) or gerund (e.g. writing)

Please fix the error(s) and push again.

[gutjuri]

Thank you for your contribution! However, we have a style-guide for our pages: https://github.com/tldr-pages/tldr/blob/main/contributing-guides/style-guide.md
If you change the syntax for placeholders, and add examples showcasing the individual options, we can accept your PR. You can also have a look into other pages in order to get used to the style we use.

[iamanurag101]

@gutjuri made the asked changes, can you please re-review my pr once, thank you

[kbdharun]

LGTM, Welcome to tldr and thanks for your contribution.

Resolved