CPP: Update comment in qhelp sample for accuracy and consistency.

cpp/ql/src/Likely Bugs/Leap Year/UncheckedLeapYearAfterYearModificationGood.c

@@ -2,7 +2,7 @@ SYSTEMTIME st;
 FILETIME ft;
 GetSystemTime(&st);
 
-// Flawed logic will result in invalid date
+// Flawed logic may result in invalid date
 st.wYear++;
 
 // Check for leap year, and adjust the date accordingly
@@ -12,4 +12,4 @@ st.wDay = st.wMonth == 2 && st.wDay == 29 && !isLeapYear ? 28 : st.wDay;
 if (!SystemTimeToFileTime(&st, &ft))
 {
 	// handle error
-}
+}