Update error message in the tests

Author: parsifal-47

llvm/test/MachineVerifier/test_g_incompatible_range.mir

@@ -18,13 +18,13 @@ body:             |
     %2:_(s32) = COPY $vgpr1
     %0:_(p1) = G_MERGE_VALUES %1(s32), %2(s32)
 
-    ; CHECK: Bad machine code: range is incompatible with the value it gets assigned to
+    ; CHECK: Bad machine code: range is incompatible with the result type
     %3:_(<2 x s32>) = G_LOAD %0(p1) :: (volatile load (s64), align 4, !range !0, addrspace 1)
 
-    ; CHECK: Bad machine code: range is incompatible with the value it gets assigned to
+    ; CHECK: Bad machine code: range is incompatible with the result type
     %4:_(p0) = G_LOAD %0(p1) :: (volatile load (s64), align 4, !range !0, addrspace 1)
 
-    ; CHECK: Bad machine code: range is incompatible with the value it gets assigned to
+    ; CHECK: Bad machine code: range is incompatible with the result type
     %5:_(<2 x p0>) = G_LOAD %0(p1) :: (volatile load (s64), align 4, !range !0, addrspace 1)
 
     $vgpr0_vgpr1 = COPY %3