intradocument hyperlinks in docs/MANUAL.md updated

[imsahil007]

As mentioned in #982 the hyperlinks for MANUAL.md weren't working.
This was happening as the way Markdown handles hyperlink is different in comparison to sphinx. I have updated all the links for this page(file).

[codecov-io]

Codecov Report

Merging #983 (7271731) into master (3d09b65) will decrease coverage by 0.07%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #983      +/-   ##
==========================================
- Coverage   85.10%   85.03%   -0.08%     
==========================================
  Files         169      169              
  Lines        2854     2854              
  Branches      311      311              
==========================================
- Hits         2429     2427       -2     
- Misses        340      343       +3     
+ Partials       85       84       -1     

Flag	Coverage Δ
longtests	85.03% <ø> (-0.04%)	⬇️

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Impacted Files	Coverage Δ
cve_bin_tool/version.py	70.00% <0.00%> (-10.00%)	⬇️
test/test_extractor.py	96.70% <0.00%> (ø)

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[terriko]

Thanks! I'm going to have to see if I can fix the markdown plugin I'm using to generate the table of contents so it doesn't revert these, though.

[terriko]

Oh, and next time you're fixing a known bug, github has some magic keywords so the bug will auto-close and it would be awesome if you could include them in the description. In case you wanted to read more about the options, here's a link: https://docs.github.com/en/enterprise/2.16/user/github/managing-your-work-on-github/closing-issues-using-keywords

In this case, I'd want to see

Fixes #982

As you may have noticed, we triage the list of bugs less regularly than I close PRs, so this really helps us out!