chore: make warning messages more consistent

linting/src/primitive_topic.rs

@@ -136,7 +136,7 @@ fn report_field(cx: &LateContext, event_def_id: DefId, field_name: &str) {
                 cx,
                 PRIMITIVE_TOPIC,
                 field.span,
-                "using `#[ink(topic)]` for a field with a primitive type",
+                "using `#[ink(topic)]` for a field with a primitive number type",
                 |diag| {
                     let snippet = snippet_opt(cx, field.span).expect("snippet must exist");
                     diag.span_suggestion(

linting/ui/fail/primitive_topic.stderr

@@ -1,24 +1,24 @@
-error: using `#[ink(topic)]` for a field with a primitive type
+error: using `#[ink(topic)]` for a field with a primitive number type
   --> $DIR/primitive_topic.rs:20:9
    |
 LL |         value_4: crate::TyAlias2,
    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `#[ink(topic)]`: `value_4: crate::TyAlias2`
    |
    = note: `-D primitive-topic` implied by `-D warnings`
 
-error: using `#[ink(topic)]` for a field with a primitive type
+error: using `#[ink(topic)]` for a field with a primitive number type
   --> $DIR/primitive_topic.rs:17:9
    |
 LL |         value_3: crate::TyAlias1,
    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `#[ink(topic)]`: `value_3: crate::TyAlias1`
 
-error: using `#[ink(topic)]` for a field with a primitive type
+error: using `#[ink(topic)]` for a field with a primitive number type
   --> $DIR/primitive_topic.rs:14:9
    |
 LL |         value_2: Balance,
    |         ^^^^^^^^^^^^^^^^ help: consider removing `#[ink(topic)]`: `value_2: Balance`
 
-error: using `#[ink(topic)]` for a field with a primitive type
+error: using `#[ink(topic)]` for a field with a primitive number type
   --> $DIR/primitive_topic.rs:11:9
    |
 LL |         value_1: u8,