Fix #56, Update out-of-sync function paramater names and correct typos

[thnkslprpt]

Describe the contribution

• Fixes #56
  • Updates parameter names in CFE_MissionLib_Python_Interface_GetFromIntfName() and CFE_MissionLib_Python_Topic_GetFromTopicName() implementations to match the prototypes
  • Fixes typo in SEDS_PREPROCESS_ENVIORNMENT const variable (environment is misspelled)
  • Fix up general comment typos along the way

Testing performed None

Expected behavior changes No change to behavior.

Contributor Info Avi Weiss @thnkslprpt