Update cpp/ql/src/experimental/Security/CWE/CWE-191/UnsignedDifferenceExpressionComparedZero.ql

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

Author: MathiasVP

cpp/ql/src/experimental/Security/CWE/CWE-191/UnsignedDifferenceExpressionComparedZero.ql

@@ -17,7 +17,7 @@ import semmle.code.cpp.valuenumbering.GlobalValueNumbering
 import semmle.code.cpp.rangeanalysis.SimpleRangeAnalysis
 import semmle.code.cpp.controlflow.Guards
 
-/** Holds if `sub` will never be nonnegative. */
+/** Holds if `sub` will never be negative. */
 predicate nonNegative(SubExpr sub) {
   not exprMightOverflowNegatively(sub.getFullyConverted())
   or