Corrected some minor typos and minor changes in templates/index.html

[Dishebh]

Checklist

• [x] I have read the Contribution & Best practices Guide and my PR follows them.
• [x] There is a corresponding issue for this pull request.
• [x] My branch is up-to-date with the Upstream master branch.
• [x] The unit tests pass locally with my changes (provide a screenshot or link for test)
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have added necessary documentation (if appropriate)

Short description of what this resolves:

Corrected some minor typos and minor changes in templates/index.html file.

[Dishebh]

Kindly ignore the 2nd and the 3rd commits. They basically redo and undo a same change. Will make a new PR for it. Thanks!