Capitalize and alphabetize summary entry

Author: traviscross

src/SUMMARY.md

@@ -49,6 +49,6 @@
   - [Rustfmt: Combine all delimited exprs as last argument](rust-2024/rustfmt-overflow-delimited-expr.md)
   - [`gen` keyword](rust-2024/gen-keyword.md)
   - [Macro fragment specifiers](rust-2024/macro-fragment-specifiers.md)
+  - [Never type fallback change](rust-2024/never-type-fallback.md)
   - [`unsafe extern` blocks](rust-2024/unsafe-extern.md)
   - [Unsafe attributes](rust-2024/unsafe-attributes.md)
-  - [never type fallback change](rust-2024/never-type-fallback.md)