[chore] Improve docs for server-like receivers in kubernetes and docker

[ankitpatel96]

Improves the docs on how to setup networking in common environments now that the collector binds to localhost by default.

Link to tracking issue

Fixes #10548

Testing

Tested the Kubernetes setup on a cluster

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.39%. Comparing base (b127da0) to head (d569495).
Report is 59 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10562      +/-   ##
==========================================
+ Coverage   92.35%   92.39%   +0.03%     
==========================================
  Files         393      403      +10     
  Lines       18622    18744     +122     
==========================================
+ Hits        17199    17318     +119     
  Misses       1066     1066              
- Partials      357      360       +3     

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[mx-psi]

Thanks for bearing with me, looks good to me!