Disable String breadcrumbs tests for freestanding stdlib (#42000)

Author: natecook1000

Diff for: validation-test/stdlib/StringBreadcrumbs.swift

@@ -1,9 +1,8 @@
-
 // RUN: %target-run-stdlib-swift
 // REQUIRES: executable_test,optimized_stdlib
 // UNSUPPORTED: freestanding
 
-// Some targetted tests for the breadcrumbs path. There is some overlap with
+// Some targeted tests for the breadcrumbs path. There is some overlap with
 // UTF16View tests for huge strings, but we want a simpler suite that targets
 // some corner cases specifically.