Apply suggestions from code review

Co-authored-by: Geoffrey White <40627776+geoffw0@users.noreply.github.com>

cpp/ql/src/experimental/Security/CWE/CWE-200/ExposureSensitiveInformationUnauthorizedActor.ql

@@ -1,5 +1,5 @@
 /**
- * @name Find work with the file without setting permissions.
+ * @name Writing to a file without setting permissions.
  * @description Lack of restriction on file access rights can be unsafe.
  * @kind problem
  * @id cpp/work-with-file-without-permissions-rights

cpp/ql/test/experimental/query-tests/Security/CWE/CWE-200/semmle/tests/test2.cpp

@@ -10,7 +10,7 @@ int main(int argc, char *argv[])
 {
   FILE *fp;
   char buf[128];
-  fp = fopen("myFile.txt","w"); // BAD [NOT DETECTED]
+  fp = fopen("myFile.txt","r+"); // BAD [NOT DETECTED]
   fgets(buf,128,fp); 
   fprintf(fp,"%s\n","data to file");
   fclose(fp);