Accept "Bezier" and "subpath" in the developer-guide LanguageTool list

The new createShape documentation uses two correct path-geometry terms that are not
in LanguageTool's dictionary, which failed the developer-guide docs gate (4 spelling
matches). Add them to the accept list, as the gate's own message directs.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: shai-almog

docs/developer-guide/languagetool-accept.txt

@@ -583,3 +583,6 @@ HLSL
 Catalyst
 texels
 billboarded
+Bezier
+subpath
+subpaths