Refine the description of the environment name

[klboke]

What's the purpose of this PR

This is an implicit logic within Apollo. If not described clearly, users will be very confused

  private static String getWellFormName(String envName) {
    if (StringUtils.isBlank(envName)) {
      return "";
    }

    String envWellFormName = envName.trim().toUpperCase();

    // special case for production in case of typo
    if ("PROD".equals(envWellFormName)) {
      return Env.PRO.name;
    }

    // special case that FAT & FWS should map to FAT
    if ("FWS".equals(envWellFormName)) {
      return Env.FAT.name;
    }

    return envWellFormName;
  }

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ff44245) 49.59% compared to head (b2caaff) 49.60%.
Report is 1 commits behind head on master.

❗ Current head b2caaff differs from pull request most recent head c8e190e. Consider uploading reports for the commit c8e190e to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #5082   +/-   ##
=========================================
  Coverage     49.59%   49.60%           
- Complexity     1903     1904    +1     
=========================================
  Files           372      372           
  Lines         11564    11564           
  Branches       1127     1127           
=========================================
+ Hits           5735     5736    +1     
  Misses         5488     5488           
+ Partials        341      340    -1     

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[nobodyiam]

LGTM