Update compiler/rustc_builtin_macros/src/asm.rs

Co-authored-by: Travis Cross <[email protected]>

Author: folkertdev

compiler/rustc_builtin_macros/src/asm.rs

@@ -208,7 +208,7 @@ pub fn parse_raw_asm_args<'a>(
             continue;
         }
 
-        // Parse operand names
+        // Parse operand names.
         let name = if p.token.is_ident() && p.look_ahead(1, |t| *t == token::Eq) {
             let (ident, _) = p.token.ident().unwrap();
             p.bump();