fix: Fix a couple of broken links

[elswork]

These changes should fix a couple of broken links on this page of website:

https://microsoft.github.io/SynapseML/docs/next/getting_started/installation/

[ghost]

All CLA requirements met.

[mhamilton723]

/azp run

[mhamilton723]

@elswork thank you!!

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[codecov-commenter]

Codecov Report

Merging #1266 (b465192) into master (1bbcb7b) will decrease coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1266      +/-   ##
==========================================
- Coverage   83.13%   83.07%   -0.06%     
==========================================
  Files         300      300              
  Lines       13699    13699              
  Branches      660      660              
==========================================
- Hits        11389    11381       -8     
- Misses       2310     2318       +8     

Impacted Files	Coverage Δ
.../execution/streaming/continuous/HTTPSourceV2.scala	89.92% <0.00%> (-2.88%)	⬇️

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