Fix spelling and link changes in README

[mohitsuman]

No description provided.

[codecov-commenter]

Codecov Report

Merging #647 (84f76ad) into master (d5866e9) will increase coverage by 0.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #647      +/-   ##
==========================================
+ Coverage   68.33%   68.45%   +0.12%     
==========================================
  Files         114      114              
  Lines        6550     6550              
  Branches     1152     1152              
==========================================
+ Hits         4476     4484       +8     
+ Misses       2074     2066       -8     

Impacted Files	Coverage Δ
src/extension.ts	79.70% <0.00%> (+1.98%)	⬆️
src/cluster-version.ts	84.61% <0.00%> (+30.76%)	⬆️

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