docs(navigation): side navigation footer overlap problem fix

[sercaneraslan]

[mary-poppins]

I'm sorry, but I wasn't able to verify your Contributor License Agreement (CLA) signature. CLA signature is required for any code contributions to AngularJS.

Please sign our CLA and ensure that the CLA signature email address and the email address in this PR's commits match.

If you signed the CLA as a corporation, please let us know the company's name.

Thanks a bunch!

PS: If you signed the CLA in the past then most likely the email addresses don't match. Please sign the CLA again or update the email address in the commit of this PR.
PS2: If you are a Googler, please sign the CLA as well to simplify the CLA verification process.

[sercaneraslan]

I signed CLA, what do I do now?
Thank you.

[mary-poppins]

CLA signature verified! Thank you!

Someone from the team will now triage your PR and it will be processed based on the determined priority (doc updates and fixes with tests are prioritized over other changes).

[jeffbcross]

Hi @sercaneraslan can you provide some more information?

• What browser/platform are you using?
• What was the root cause of this spacing issue?
• How did you come up with 136 pixels?

And please update the commit message per our contribution guidelines

[sercaneraslan]

I'm closed this issue because I made wrong fix. The new issue is: #8923 (I added more detail information)