Doc: Use PascalCase names in hyperlinks

We were not consistently applying .lower() every time we construct
an hyperlink, so there would be case mismatch. It works fine to keep
the natural case for those links.

doc/tools/makerst.py

@@ -312,7 +312,7 @@ def rstize_text(text, cclass):
 def make_type(t):
     global class_names
     if t in class_names:
-        return ':ref:`' + t + '<class_' + t.lower() + '>`'
+        return ':ref:`' + t + '<class_' + t + '>`'
     return t
 
 
@@ -332,7 +332,7 @@ def make_enum(t):
         c = "@GlobalScope"
         e = t
     if c in class_names:
-        return ':ref:`' + e + '<enum_' + c.lower() + '_' + e.lower() + '>`'
+        return ':ref:`' + e + '<enum_' + c + '_' + e + '>`'
     return t