Avoid ref when using format! in compiler

Clean up a few minor refs in `format!` macro, as it has a performance cost. Apparently the compiler is unable to inline `format!("{}", &variable)`, and does a run-time double-reference instead (format macro already does one level referencing).  Inlining format args prevents accidental `&` misuse.

compiler/rustc_hir_analysis/src/errors/wrong_number_of_generic_args.rs

@@ -651,7 +651,7 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> {
             self.path_segment.hir_id,
             num_params_to_take,
         );
-        debug!("suggested_args: {:?}", &suggested_args);
+        debug!("suggested_args: {suggested_args:?}");
 
         match self.angle_brackets {
             AngleBrackets::Missing => {