[NFC] Typo in __clang_hip_cmath.h (#139892)

ambibuity -> ambiguity

Author: jmmartinez

clang/lib/Headers/__clang_hip_cmath.h

@@ -448,7 +448,7 @@ class __promote : public __promote_imp<_A1, _A2, _A3> {};
 } // namespace __hip
 
 // __HIP_OVERLOAD1 is used to resolve function calls with integer argument to
-// avoid compilation error due to ambibuity. e.g. floor(5) is resolved with
+// avoid compilation error due to ambiguity. e.g. floor(5) is resolved with
 // floor(double).
 #define __HIP_OVERLOAD1(__retty, __fn)                                         \
   template <typename __T>                                                      \
@@ -459,7 +459,7 @@ class __promote : public __promote_imp<_A1, _A2, _A3> {};
   }
 
 // __HIP_OVERLOAD2 is used to resolve function calls with mixed float/double
-// or integer argument to avoid compilation error due to ambibuity. e.g.
+// or integer argument to avoid compilation error due to ambiguity. e.g.
 // max(5.0f, 6.0) is resolved with max(double, double).
 #if __cplusplus >= 201103L
 #define __HIP_OVERLOAD2(__retty, __fn)                                         \