Fix link description (#23)

[HarshKapadia2]

Thank you for the PR, @Rodrigue819!

Changes:

• There is a small typo in the what_is_github.adoc file. There is an extra [. Please make another commit to remove it.
• Please follow the instructions in the CONTRIBUTING.md file to generate an index.html file. Please make another commit to include the file after the first point is covered.

[HarshKapadia2]

Hey @Rodrigue819 I was going through the files and found one link in git_merge.adoc that you missed. Could you please correct that, generate a new index.html and make a commit?

A picture for your ref (the 2nd line has the link that you missed):

[HarshKapadia2]

Also, you have not covered the second part of the issue:

Remove hyperlinks on pictures.

Just remove the link attribute in the pictures (if present), generate index.html and make a commit.

The files git_add.adoc, git_pull.adoc, git_merge.adoc and git_push.adoc have pictures with the link attribute. (Just check other files as well, to be sure. I couldn't find any more.)

[Rodrigue819]

@HarshKapadia2 I've made the change for the missed link. I did another PR with the link in the picture. I originally missed that one and did not want to mess with the PR that you already had revised. Look at PR #48

[HarshKapadia2]

In the future, please remember to make a new branch for every PR. It is not a good practice to make PRs from the master branch. If you don't know how to do that, you can learn to make a PR. 😃

[HarshKapadia2]

I did another PR with the link in the picture. I originally missed that one and did not want to mess with the PR that you already had revised. Look at PR #48

Oh my bad. I'll have a look.

[HarshKapadia2]

The PRs for issue #23 are #46 and #49.