Fixed libgtest path in document
@@ -64,7 +64,7 @@ Then compile and install [Google Test](https://github.com/google/googletest):
$ cd /usr/src/googletest
$ sudo cmake .
$ sudo make
-$ sudo cp ./googlemock/libgmock.a ./googletest/libgtest.a /usr/lib/
+$ sudo cp ./googlemock/libgmock.a ./googlemock/gtest/libgtest.a /usr/lib/
# less than 1.18.0
$ cd /usr/src/gtest
