Apply suggestions from code review

Author: zooba

source/tutorials/packaging-projects.rst

@@ -166,13 +166,13 @@ for more details.
 
 The ``requires`` key is a list of packages that are needed to build your package.
 The front end should install them automatically when building your package.
-There will always be your build backend package, and potentially other build-time
+This should always include your backend's package, and might have other build-time
 dependencies.
 
 The ``build-backend`` key is the name of the Python object that frontends will use
 to perform the build.
 
-Both of these values will be given to you by the documentation for your build
+Both of these values will be provided by the documentation for your build
 backend, or generated by its command line interface. There should be no need for
 you to customize these settings.