update FOQUS documentation to include info on how to set paths for SimSinter and TurbineLite

[kbuma]

update FOQUS documentation to include info on how to set paths for SimSinter and TurbineLite

Fixes/Addresses:

#1190

Summary/Motivation:

With version 3 of SimSinter and TurbineLite the applications were upgraded to 64-bit and thus their default installation paths changed. FOQUS default paths for these point to the 32-bit Windows default installation paths.

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1. I agree my contributions are submitted under the copyright and license terms described in the LICENSE.md file at the top level of this directory.
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[ksbeattie]

LGTM

[boverhof]

Looks okay, hopefully it's obvious to people where they installed the packages.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 38.55%. Comparing base (820bbdb) to head (cf46811).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1204      +/-   ##
==========================================
+ Coverage   38.52%   38.55%   +0.02%     
==========================================
  Files         163      163              
  Lines       36872    36872              
  Branches     6107     6107              
==========================================
+ Hits        14205    14216      +11     
+ Misses      21553    21539      -14     
- Partials     1114     1117       +3     

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