Trying to make it more clear: this is probably not about mock classes, but about mocked classes

PiperOrigin-RevId: 439427291
Change-Id: I3cac035e732fb3fe4f9c314657932a55269e0416

Author: Abseil Team

docs/gmock_for_dummies.md

@@ -190,12 +190,12 @@ Some people put it in a `_test.cc`. This is fine when the interface being mocked
 `Foo` changes it, your test could break. (You can't really expect `Foo`'s
 maintainer to fix every test that uses `Foo`, can you?)
 
-Generally, you should not define mock classes you don't own. If you must mock
-such a class owned by others, define the mock class in `Foo`'s Bazel package
-(usually the same directory or a `testing` sub-directory), and put it in a `.h`
-and a `cc_library` with `testonly=True`. Then everyone can reference them from
-their tests. If `Foo` ever changes, there is only one copy of `MockFoo` to
-change, and only tests that depend on the changed methods need to be fixed.
+Generally, you should not mock classes you don't own. If you must mock such a
+class owned by others, define the mock class in `Foo`'s Bazel package (usually
+the same directory or a `testing` sub-directory), and put it in a `.h` and a
+`cc_library` with `testonly=True`. Then everyone can reference them from their
+tests. If `Foo` ever changes, there is only one copy of `MockFoo` to change, and
+only tests that depend on the changed methods need to be fixed.
 
 Another way to do it: you can introduce a thin layer `FooAdaptor` on top of
 `Foo` and code to this new interface. Since you own `FooAdaptor`, you can absorb