feat(gnoweb): added link to readme if present

[agherasie]

Added a link to the README.md file of the realm if it exists

To allow for quicker access while browsing gnoweb

This should solve #2458

Contributors' checklist...

• Added new tests, or not needed, or not feasible
• Provided an example (e.g. screenshot) to aid review or the PR is self-explanatory
• Updated the official documentation or not needed
• No breaking changes were made, or a BREAKING CHANGE: xxx message was included in the description
• Added references to related issues and PRs
• Provided any useful hints for running manual tests
• Added new benchmarks to generated graphs, if any. More info here.

[codecov]

Codecov Report

Attention: Patch coverage is 57.14286% with 3 lines in your changes missing coverage. Please review.

Project coverage is 60.11%. Comparing base (e844fc1) to head (fe9bc25).

Files	Patch %	Lines
gno.land/pkg/gnoweb/gnoweb.go	57.14%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2461      +/-   ##
==========================================
- Coverage   60.12%   60.11%   -0.01%     
==========================================
  Files         560      560              
  Lines       74690    74697       +7     
==========================================
- Hits        44905    44902       -3     
- Misses      26397    26402       +5     
- Partials     3388     3393       +5     

Flag	Coverage Δ
contribs/gnodev	61.40% <ø> (ø)
contribs/gnofaucet	15.31% <ø> (ø)
gno.land	64.14% <57.14%> (-0.02%)	⬇️
gnovm	64.19% <ø> (ø)
misc/genstd	80.54% <ø> (ø)
misc/logos	19.88% <ø> (ø)
tm2	62.01% <ø> (+<0.01%)	⬆️

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[gfanton]

@agherasie can you fix bytes import on gnoweb pkg ? It should fix linting as well

[gfanton]

Looking good! But you need to update your logic so it supports the scenario described in my comment below