abilities syntax has -> implements

crates/compiler/solve/src/ability.rs

@@ -739,7 +739,7 @@ trait DerivableVisitor {
                             ) {
                                 // TODO: currently, just we suppose the presence of a flex var may
                                 // include more or less things which we can derive. But, we should
-                                // instead recurse here, and add a `t ~ u | u has Decode` constraint as needed.
+                                // instead recurse here, and add a `t ~ u | u implements Decode` constraint as needed.
                                 stack.push(ext);
                             }
                         }

crates/compiler/solve/src/solve.rs

@@ -2510,7 +2510,7 @@ impl AmbientFunctionPolicy {
             }),
             Content::FlexVar(_) => {
                 // Something like
-                //   Encoder fmt <a> : List U8, fmt -a-> List U8 | fmt has EncoderFormatting
+                //   Encoder fmt <a> : List U8, fmt -a-> List U8 | fmt implements EncoderFormatting
                 // THEORY: Replace these with empty lambda sets. They will unify the same as a flex
                 // var does, but allows us to record the ambient function properly.
                 Content::LambdaSet(LambdaSet {