fix: apply darker code block background color to DocsLayout

Applied the color change (#14151f instead of #1a1b26 for code blocks)
to the DocsLayout function, making code blocks slightly darker than the
main background for better visual distinction.

templates/docs.templ

@@ -21,7 +21,7 @@ templ DocsLayout(nav Navigation, doc Document, user User) {
 				background-color: #1a1b26 !important;
 			}
 			.prose code {
-				background-color: #16161e !important;
+				background-color: #1a1b26 !important;
 				color: #a9b1d6 !important;
 			}
 			.prose pre code {