Fix broken links on the site

[ilyavolodin]

I ran a local crawler on the site and here's the list of links that were broken:

http://localhost:8080/docs/maintainer-guide/governance links to missing page. List of links is ["http://localhost:8080/docs/maintainer-guide/contributing"]
Error 404 for http://localhost:8080/docs/maintainer-guide/contributing
http://localhost:8080/docs/6.0.0/user-guide/configuring links to missing page. List of links is ["http://localhost:8080/docs/6.0.0/rules/"]
Error 404 for http://localhost:8080/docs/6.0.0/rules/
http://localhost:8080/docs/5.0.0/developer-guide/working-with-rules links to missing page. List of links is ["http://localhost:8080/docs/5.0.0/rules/","http://localhost:8080/docs/5.0.0/rules/"]
Error 404 for http://localhost:8080/docs/5.0.0/rules/
http://localhost:8080/docs/5.0.0/user-guide/configuring links to missing page. List of links is ["http://localhost:8080/docs/5.0.0/rules/"]
http://localhost:8080/docs/4.0.0/user-guide/command-line-interface links to missing page. List of links is ["http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/","http://localhost:8080/docs/4.0.0/user-guide/formatters/"]
Error 404 for http://localhost:8080/docs/4.0.0/user-guide/formatters/
http://localhost:8080/blog/2016/02/eslint-v2.0.0-released links to missing page. List of links is ["http://localhost:8080/docs/developer-guide/code-path-analysis.html"]
Error 404 for http://localhost:8080/docs/developer-guide/code-path-analysis.html
http://localhost:8080/docs/2.0.0/developer-guide/working-with-rules links to missing page. List of links is ["http://localhost:8080/docs/2.0.0/developer-guide/code-path-analysis"]
http://localhost:8080/docs/2.0.0/developer-guide/code-path-analysis links to missing page. List of links is ["http://localhost:8080/docs/2.0.0/developer-guide/code-path-analysis/"]
Error 404 for http://localhost:8080/docs/2.0.0/developer-guide/code-path-analysis/
http://localhost:8080/blog/2015/06/eslint-0.24.0-released links to missing page. List of links is ["http://localhost:8080/blog/2015/preparing-for-1.0.0"]
Error 404 for http://localhost:8080/blog/2015/preparing-for-1.0.0
Total pages: 939. Errors found 7

[dotJoel]

I can look at this today, if you don't mind.
A spot check revealed some destinations are easy to figure out.

[dotJoel]

These three pages don't exist right now.

• /docs/6.0.0/rules/
• /docs/5.0.0/rules/
• /docs/4.0.0/user-guide/formatters/

/3.0.0/rules/ and /4.0.0/rules/ have an index.liquid 5 and 6 do not.
user-guide/formatters/index.md exists in 3.0.0 and 5.0.0, but not in 4.0.0.

I'm not sure what the team would like to do about this.

The remaining two have obvious fixes:

• http://localhost:8080/docs/2.0.0/developer-guide/working-with-rules links to missing page. List of links is ["http://localhost:8080/docs/2.0.0/developer-guide/code-path-analysis"]
  can change to /docs/2.0.0/developer-guide/code-path-analysis.html
• http://localhost:8080/docs/maintainer-guide/governance links to missing page. List of links is ["http://localhost:8080/docs/maintainer-guide/contributing"]
  can probably change to /docs/developer-guide/contributing

[nzakas]

Thanks for digging into that! I think you should be able to check out the version tags on the repo to find the missing files (for example, if you check out the v6.8.0, you should be able to find the missing rules index for v6).

[qwright10]

Also https://eslint.org/docs/rules/no-useless-backreference.

[kaicataldo]

@dotJoel Are you still willing to work on this?

[dotJoel]

@kaicataldo yea.. I will try to finish it up today.
I have some changes ready, but need to address broken links found by running LinkChecker myself. Some seemed related to what I have done so far on this new pending branch.

[btmills]

@dotJoel thank you for putting together #710! It looks like this is all taken care of and can be closed?, but I wanted to check with you first since you used "refs" rather than "fixes" on that PR to make sure you weren't wanting to leave this open to track any remaining work.

[dotJoel]

@btmills this issue should be resolved by the two PRs. I was not using "refs" the second time to imply that there was work remaining.
I feel this issue is safe to close.