fix: doc requirements

[dpgaspar]

Description

Fix docs requirements

ADDITIONAL INFORMATION

• Has associated issue:
• Is CRUD MVC related.
• Is Auth, RBAC security related.
• Changes the security db schema.
• Introduces new feature
• Removes existing feature

[codecov]

Codecov Report

Merging #1820 (5e0f666) into master (a86835f) will increase coverage by 5.60%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1820      +/-   ##
==========================================
+ Coverage   71.48%   77.08%   +5.60%     
==========================================
  Files          56       56              
  Lines        8226     8226              
==========================================
+ Hits         5880     6341     +461     
+ Misses       2346     1885     -461     

Flag	Coverage Δ
python	77.08% <ø> (+5.60%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
flask_appbuilder/models/filters.py	89.11% <0.00%> (+0.68%)	⬆️
flask_appbuilder/models/base.py	74.03% <0.00%> (+1.10%)	⬆️
flask_appbuilder/upload.py	36.63% <0.00%> (+3.96%)	⬆️
flask_appbuilder/models/mongoengine/fields.py	69.44% <0.00%> (+27.77%)	⬆️
flask_appbuilder/security/mongoengine/manager.py	66.15% <0.00%> (+66.15%)	⬆️
flask_appbuilder/models/mongoengine/filters.py	68.57% <0.00%> (+68.57%)	⬆️
flask_appbuilder/models/mongoengine/interface.py	77.50% <0.00%> (+77.50%)	⬆️
flask_appbuilder/security/mongoengine/models.py	89.33% <0.00%> (+89.33%)	⬆️

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