square away the stuff that hasn't been merged in a manual review

This fixes up f2fb48c3 (a manual merge) that has abandoned some things
from PR #2407.

googletest/docs/advanced.md

@@ -465,7 +465,7 @@ You can call the function
 to assert that types `T1` and `T2` are the same. The function does nothing if
 the assertion is satisfied. If the types are different, the function call will
 fail to compile, the compiler error message will say that
-`type1 and type2 are not the same type` and most likely (depending on the compiler)
+`T1 and T2 are not the same type` and most likely (depending on the compiler)
 show you the actual values of `T1` and `T2`. This is mainly useful inside
 template code.
 

googletest/include/gtest/gtest.h

@@ -2298,8 +2298,7 @@ class GTEST_API_ ScopedTrace {
 // to cause a compiler error.
 template <typename T1, typename T2>
 constexpr bool StaticAssertTypeEq() noexcept {
-  static_assert(std::is_same<T1, T2>::value,
-                "type1 and type2 are not the same type");
+  static_assert(std::is_same<T1, T2>::value, "T1 and T2 are not the same type");
   return true;
 }