docs: cleanup and normalization

[reubenmiller]

Proposed changes

Updating the docs to use consistent:

• title
• file names
• anchors
• references to thin-edge.io (product name)
• Use title case for page headings
• Add page descriptions (to control which text is shown in the DocCardList previews and the html's meta description field for SEO)
• Page side bar order (at least in places where the side bar is not a user targeted sequence of steps)

Along the way a few minor things have been addressed (apologies for mixing it in)

• Disable image zoom on images which don't make sense (e.g. cloudsmith package links)
• Fix minor grammar mistakes (e.g. missing words, or missing plural form)

Future work

A new ticket has been created to address some additional cleanup items (which won't be included in this already too large PR):

• Documentation punchlist #2641

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
• Documentation Update (if none of the other choices apply)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Paste Link to the issue

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA (in all commits with git commit -s)
• I ran cargo fmt as mentioned in CODING_GUIDELINES
• I used cargo clippy as mentioned in CODING_GUIDELINES
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[github-actions]

Robot Results

✅ Passed	❌ Failed	⏭️ Skipped	Total	Pass %	⏱️ Duration
385	0	3	385	100	54m56.619s

[didier-wenzek]

This is a real step forward. I have some comments and questions though.

[didier-wenzek]

Approved. A great step forward, making the docs easier to discover and navigate.