fix(MetaDataProvider): Fix tag in GeneralImageModule

[jlopes90]

Context

cornerstonejs/cornerstone3D#1165

Changes & Results

Testing

Checklist

PR

• [] My Pull Request title is descriptive, accurate and follows the
  semantic-release format and guidelines.

Code

• [] My code has been well-documented (function documentation, inline comments,
  etc.)

Public Documentation Updates

• [] The documentation page has been updated as necessary for any public API
  additions or removals.

Tested Environment

• [] OS:
• [] Node version:
• [] Browser:

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 44.44%. Comparing base (8a335bd) to head (7e76125).
Report is 260 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4000      +/-   ##
==========================================
- Coverage   46.23%   44.44%   -1.80%     
==========================================
  Files          78       80       +2     
  Lines        1276     1332      +56     
  Branches      312      327      +15     
==========================================
+ Hits          590      592       +2     
- Misses        548      587      +39     
- Partials      138      153      +15     

see 9 files with indirect coverage changes

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