Fails to generate mono bindings

[Xrayez]

Module and Godot Engine versions:
c8d396c, Godot 3.2.

OS/device including version:
Windows 10.

Issue description:
Casting enum with the module_bind namespace scope makes it append to documentation (while regenerating the docs):

Which makes the --generate-mono-glue modules/mono/glue fail:

Generating GeometryInstance.cs...
Generating GeometryTools2D.cs...
ERROR: BindingsGenerator::bbcode_to_xml: Cannot resolve enum reference in documentation: 'PolyDecompType'.
   At: modules\mono\editor\bindings_generator.cpp:377
Generating Gradient.cs...
Generating GradientTexture.cs...
Generating GraphEdit.cs...

Steps to reproduce:
Compile the module while following Compiling for Mono docs.

[Xrayez]

The solution is reverting c8d396c, but I wouldn't really want to do this given there are other bugs associated with classes having an underscore.

[Xrayez]

This is still an issue, but given that this module is now deprecated and merged as part of Goost (with the suggested revert), it can be closed.