Fix typo, update tests snaps

src/diagnostics.rs

@@ -208,7 +208,7 @@ impl Display for WarningType {
   fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
     match self {
       WarningType::MatchOnlyVars => write!(f, "Match expression at definition only uses var patterns."),
-      WarningType::UnusedDefinition => write!(f, "Definition is unusued."),
+      WarningType::UnusedDefinition => write!(f, "Definition is unused."),
       WarningType::RepeatedBind(warn) => write!(f, "{warn}"),
     }
   }

tests/snapshots/compile_file__crlf.hvm.snap

@@ -2,9 +2,9 @@
 source: tests/golden_tests.rs
 input_file: tests/golden_tests/compile_file/crlf.hvm
 ---
-// WARNING:
+// Warnings:
 In definition 'a':
-  Definition is unusued.
+  Definition is unused.
 
 @a = #1
 @main = #2

tests/snapshots/compile_file__match_num_all_patterns.hvm.snap

@@ -2,29 +2,29 @@
 source: tests/golden_tests.rs
 input_file: tests/golden_tests/compile_file/match_num_all_patterns.hvm
 ---
-// WARNING:
+// Warnings:
 In definition 'succ_var':
-  Definition is unusued.
+  Definition is unused.
 In definition 'succ_var_zero':
-  Definition is unusued.
+  Definition is unused.
 In definition 'succ_zero':
-  Definition is unusued.
+  Definition is unused.
 In definition 'succ_zero_succ':
-  Definition is unusued.
+  Definition is unused.
 In definition 'succ_zero_var':
-  Definition is unusued.
+  Definition is unused.
 In definition 'var_succ':
-  Definition is unusued.
+  Definition is unused.
 In definition 'var_zero':
-  Definition is unusued.
+  Definition is unused.
 In definition 'zero_succ':
-  Definition is unusued.
+  Definition is unused.
 In definition 'zero_succ_var':
-  Definition is unusued.
+  Definition is unused.
 In definition 'zero_var':
-  Definition is unusued.
+  Definition is unused.
 In definition 'zero_var_succ':
-  Definition is unusued.
+  Definition is unused.
 
 @main = #0
 @succ_var = (?<(#0 (a a)) b> b)

tests/snapshots/compile_file__match_num_unscoped_lambda.hvm.snap

@@ -2,11 +2,11 @@
 source: tests/golden_tests.rs
 input_file: tests/golden_tests/compile_file/match_num_unscoped_lambda.hvm
 ---
-// WARNING:
+// Warnings:
 In definition 'lambda_in':
-  Definition is unusued.
+  Definition is unused.
 In definition 'lambda_out':
-  Definition is unusued.
+  Definition is unused.
 
 @lambda_in = (?<((a a) (b (c b))) (c d)> d)
 @lambda_out = (?<(a (b b)) c> (a c))

tests/snapshots/compile_file__repeated_bind_match.hvm.snap

@@ -2,7 +2,7 @@
 source: tests/golden_tests.rs
 input_file: tests/golden_tests/compile_file/repeated_bind_match.hvm
 ---
-// WARNING:
+// Warnings:
 In definition 'main':
   Repeated bind inside match arm: 'x'.
 

tests/snapshots/compile_file__repeated_bind_rule.hvm.snap

@@ -2,7 +2,7 @@
 source: tests/golden_tests.rs
 input_file: tests/golden_tests/compile_file/repeated_bind_rule.hvm
 ---
-// WARNING:
+// Warnings:
 In definition 'Foo':
   Repeated bind inside rule pattern: 'a'.