Fix regex capture issues pointed out in #400

[mkienow-r7]

Description

Fixes regex capture issues pointed out in #400.

Motivation and Context

Fix regex issues discovered after adding missing example capture group attributes.

How Has This Been Tested?

• Verified "Windows 10 Mobile" os.edition was not incorrectly captured

  $ echo "Windows 10 Mobile Edition" | ./bin/recog_match xml/operating_system.xml
  MATCH: {"matched"=>"Windows 10 Mobile", "os.vendor"=>"Microsoft", "os.family"=>"Windows", "os.product"=>"Windows 10 Mobile", "os.edition"=>nil, "os.device"=>"Mobile", "os.cpe23"=>"cpe:/o:microsoft:windows_10_mobile:-", "service.protocol"=>"", "fingerprint_db"=>"operating_system.name", "data"=>"Windows 10 Mobile Edition"}
  
  $ echo "Windows 10 Mobile" | ./bin/recog_match xml/operating_system.xml
  MATCH: {"matched"=>"Windows 10 Mobile", "os.vendor"=>"Microsoft", "os.family"=>"Windows", "os.product"=>"Windows 10 Mobile", "os.edition"=>nil, "os.device"=>"Mobile", "os.cpe23"=>"cpe:/o:microsoft:windows_10_mobile:-", "service.protocol"=>"", "fingerprint_db"=>"operating_system.name", "data"=>"Windows 10 Mobile"}

• rake tests

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• [x] I have updated the documentation accordingly (or changes are not required).
• [x] I have added tests to cover my changes (or new tests are not required).
• [x] All new and existing tests passed.