[diff.cpp23.lex] Fix capitalisation in heading

tkoeppe · tkoeppe · commit ff592bd14ff3 · 2025-07-17T13:43:35.000+01:00
diff --git a/source/compatibility.tex b/source/compatibility.tex
@@ -11,7 +11,7 @@
 ISO \CppXXIII{},
 by the chapters of this document.
 
-\rSec2[diff.cpp23.lex]{\ref{lex}: Lexical conventions}
+\rSec2[diff.cpp23.lex]{\ref{lex}: lexical conventions}
 
 \diffref{lex.operators}
 \change
