Fix typo in the release notes

Author: DougGregor

Release Notes/600.md

@@ -133,7 +133,7 @@
   - Pull request: https://github.com/swiftlang/swift-syntax/pull/2433
 
 - `CanImportExprSyntax` and `CanImportVersionInfoSyntax`
-  - Description: Instead of parsing `canImport` inside `#if` directives as a special expression node, parse it as a functionc call expression. This is in-line with how the `swift(>=6.0)` and `compiler(>=6.0)` directives are parsed.
+  - Description: Instead of parsing `canImport` inside `#if` directives as a special expression node, parse it as a function call expression. This is in-line with how the `swift(>=6.0)` and `compiler(>=6.0)` directives are parsed.
   - Pull request: https://github.com/swiftlang/swift-syntax/pull/2025
 
 - `SyntaxClassifiedRange.offset`, `length` and `endOffset`