Add pagination to documentation pages

[JustinyAhin]

Fixes #442.

Add pagination to documentation pages.

[codecov]

Codecov Report

Merging #443 (f6c6d0b) into master (282d774) will decrease coverage by 0.11%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #443      +/-   ##
============================================
- Coverage     93.06%   92.95%   -0.12%     
- Complexity      763      764       +1     
============================================
  Files            21       21              
  Lines          1788     1788              
============================================
- Hits           1664     1662       -2     
- Misses          124      126       +2     

Impacted Files	Coverage Δ	Complexity Δ
library/Requests/Transport/fsockopen.php	93.78% <0.00%> (-0.57%)	69.00% <0.00%> (ø%)
library/Requests/Transport/cURL.php	94.23% <0.00%> (-0.49%)	67.00% <0.00%> (+1.00%)	⬇️

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[jrfnl]

Hi Justin,

Sorry for the long wait before a review and thanks for your PR.

The markdown pages in the docs folder are also used for the https://requests.ryanmccue.info/docs/ website, so using absolute links to the markdown files in the GH repo is a no-no.

Could you please change the links to relative links ? I.e. just the filename.md.

[JustinyAhin]

Thank you for looking Juliette.

I've updated the pagination to use relative links

[jrfnl]

Thanks @JustinyAhin !