C++: Fix typos in tests

Author: paldepind

cpp/ql/test/library-tests/rangeanalysis/SimpleRangeAnalysis/test.c

@@ -914,15 +914,15 @@ void guard_with_exit(int x, int y) {
 
   // This test ensures that we correctly identify
   // that the upper bound for y is max_int when calling `out(y)`.
-  // The RangeSsa will place guardPhy on `out(y)`, and consequently there is no
+  // The RangeSsa will place guardPhi on `out(y)`, and consequently there is no
   // frontier phi node at out(y).
 }
 
 void test(int x) {
   if (x >= 10) {
     return;
   }
-  // The basic below has two predecessors.
+  // The basic block below has two predecessors.
 label:
   out(x);
   goto label;