transpile: const macros: fix some grammar in comment about unsafe const contexts

Author: kkysen

c2rust-transpile/src/translator/mod.rs

@@ -2700,9 +2700,9 @@ impl<'c> Translation<'c> {
                 let mut init = init?;
 
                 stmts.append(init.stmts_mut());
-                // A const context is not "already unsafe" the way code within a `fn` is (since we
-                // translate all fns as unsafe). Therefore, in const context expose any underlying
-                // unsafety in the initializer with an unsafe block.
+                // A `const` context is not "already unsafe" the way code within a `fn` is
+                // (since we translate all `fn`s as `unsafe`). Therefore, in `const` contexts,
+                // expose any underlying unsafety in the initializer with an `unsafe` block.
                 let init = if ctx.is_const {
                     init.to_unsafe_pure_expr()
                         .expect("init should not have any statements")