chore: minor improvement for comments

crates/cairo-lang-parser/src/parser.rs

@@ -1338,7 +1338,7 @@ impl<'a, 'mt> Parser<'a, 'mt> {
     }
 
     /// Assumes the current token is Impl.
-    /// Expects either an impl item (`impl <name> of <trait_path> {<impl_body>}`) or and impl alias
+    /// Expects either an impl item (`impl <name> of <trait_path> {<impl_body>}`) or an impl alias
     /// `impl <name> = <path>;`.
     /// If `only_allow_alias` is true, always returns an ImplItemOrAlias::Alias.
     fn expect_item_impl_inner(

crates/cairo-lang-syntax/src/node/ast_test.rs

@@ -180,7 +180,7 @@ fn setup(db: &DatabaseForTesting) -> SyntaxNode<'_> {
     );
     // SyntaxNode::new_detached_root only accepts ast::SyntaxFileGreen, but we only have an
     // expression.
-    // This is a hack to crate a green id of "SyntaxFile" from "Expr".
+    // This is a hack to create a green id of "SyntaxFile" from "Expr".
     let root = SyntaxFileGreen(expr.0);
     let file_id = FileLongId::OnDisk(PathBuf::default()).intern(db);
     SyntaxNode::new_detached_root(db, file_id, root.0)