[NFC] Fix spelling of "definitely". (#104455)

This corrects the misspelling of "definitely" as "definately". No
functional changes.

Author: sp

clang/lib/StaticAnalyzer/Checkers/StringChecker.cpp

@@ -48,7 +48,7 @@ bool StringChecker::isCharToStringCtor(const CallEvent &Call,
 
   // Verify that the parameters have the expected types:
   // - arg 1: `const CharT *`
-  // - arg 2: some allocator - which is definately not `size_t`.
+  // - arg 2: some allocator - which is definitely not `size_t`.
   const QualType Arg1Ty = Call.getArgExpr(0)->getType().getCanonicalType();
   const QualType Arg2Ty = Call.getArgExpr(1)->getType().getCanonicalType();