Replace where relevant the occurrences of "https://github.com/rmccue/Requests/"

[JustinyAhin]

Fixes #440.

Replace where relevant the occurrences of "https://github.com/rmccue/Requests/" in the documentation

[codecov]

Codecov Report

Merging #441 (ce9bc3d) into master (282d774) will decrease coverage by 0.05%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #441      +/-   ##
============================================
- Coverage     93.06%   93.00%   -0.06%     
  Complexity      763      763              
============================================
  Files            21       21              
  Lines          1788     1788              
============================================
- Hits           1664     1663       -1     
- Misses          124      125       +1     

Impacted Files	Coverage Δ	Complexity Δ
library/Requests/Proxy/HTTP.php	93.33% <0.00%> (-6.67%)	13.00% <0.00%> (ø%)
library/Requests/Transport/fsockopen.php	94.91% <0.00%> (+0.56%)	69.00% <0.00%> (ø%)

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[schlessera]

Thanks for the PR, @JustinyAhin !