Rename variant_marked_non_exhaustive to `enum_variant_marked_non_ex…

…haustive`. (#908)

This improves our lint naming consistency, since other enum variant
lints have `enum_variant_` prefixes.

src/lints/variant_marked_non_exhaustive.ron → src/lints/enum_variant_marked_non_exhaustive.ron

@@ -1,5 +1,5 @@
 SemverQuery(
-    id: "variant_marked_non_exhaustive",
+    id: "enum_variant_marked_non_exhaustive",
     human_readable_name: "enum variant marked #[non_exhaustive]",
     description: "An exhaustive enum variant has been marked #[non_exhaustive].",
     reference: Some("An exhaustive enum variant has been marked #[non_exhaustive], preventing it from being constructed using a literal from outside its own crate."),

src/query.rs

@@ -805,6 +805,7 @@ add_lints!(
     enum_tuple_variant_field_now_doc_hidden,
     enum_unit_variant_changed_kind,
     enum_variant_added,
+    enum_variant_marked_non_exhaustive,
     enum_variant_missing,
     exported_function_changed_abi,
     function_abi_no_longer_unwind,
@@ -872,5 +873,4 @@ add_lints!(
     union_now_doc_hidden,
     union_pub_field_now_doc_hidden,
     unit_struct_changed_kind,
-    variant_marked_non_exhaustive,
 );