Fix the ray links in documentation

[rmfan]

No description provided.

[codecov-commenter]

Codecov Report

Merging #108 (0d4a61e) into master (8a0ad47) will increase coverage by 0.75%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #108      +/-   ##
==========================================
+ Coverage   61.39%   62.14%   +0.75%     
==========================================
  Files          32       32              
  Lines        2531     2531              
  Branches      416      416              
==========================================
+ Hits         1554     1573      +19     
+ Misses        896      877      -19     
  Partials       81       81              

Impacted Files	Coverage Δ
adaptdl/adaptdl/goodput.py	99.18% <0.00%> (+1.63%)	⬆️
adaptdl/adaptdl/env.py	83.33% <0.00%> (+3.33%)	⬆️
adaptdl/adaptdl/sched_hints.py	58.33% <0.00%> (+8.33%)	⬆️
adaptdl/adaptdl/torch/_metrics.py	88.54% <0.00%> (+10.68%)	⬆️

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