[diff.cpp23.dcl.dcl] Fix capitalisation of heading

tkoeppe · tkoeppe · commit a52859fad0d3 · 2024-07-27T00:07:43.000+01:00
diff --git a/source/compatibility.tex b/source/compatibility.tex
@@ -53,7 +53,7 @@
 \end{codeblock}
 \end{example}
 
-\rSec2[diff.cpp23.dcl.dcl]{\ref{dcl.dcl}: Declarations}
+\rSec2[diff.cpp23.dcl.dcl]{\ref{dcl.dcl}: declarations}
 
 \diffref{dcl.init.list}
 \change
