Fixed docs.parseplatform.org links in README.md

[montymxb]

Fixes a couple links in the README.md that were forcing https while docs.parseplatform.org does not support a secure connection.

Additionally corrects one link to parseplatform.github.io, which is no longer live, to docs.parseplatform.com for checking the list of SDKs.

[montymxb]

@flovilmart just realized there should be one adjustment. There's a more appropriate location for viewing sdks directly at http://parseplatform.org/#sdks rather than docs.parseplatform.com. Shows stars, forks, etc. I'll put that in real quick.

[codecov]

Codecov Report

Merging #3728 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3728      +/-   ##
==========================================
- Coverage   90.22%   90.21%   -0.02%     
==========================================
  Files         114      114              
  Lines        7461     7461              
==========================================
- Hits         6732     6731       -1     
- Misses        729      730       +1

Impacted Files	Coverage Δ
src/Adapters/Auth/meetup.js	84.21% <0%> (-5.27%)	⬇️
...dapters/Storage/Postgres/PostgresStorageAdapter.js	95.31% <0%> (-0.14%)	⬇️
src/RestWrite.js	94.51% <0%> (+0.2%)	⬆️

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[montymxb]

One more thing, in relation to out of date links the description for this repo has one that should be updated as well.

Parse-compatible API server module for Node/Express https://parseplatform.github.io

[montymxb]

@flovilmart looks like the repo description link, although updated, should be http://parseplatform.org instead of https.

[flovilmart]

Yay.. should be good now!