Some documentation fixes.

README.rst

@@ -52,10 +52,10 @@ end with :code:`.tfvars`, a :code:`-var-file` argument is added. For example:
 :code:`-var-file=prod/a.tfvars` and :code:`-var-file=prod/b.tfvars`.
 
 By default :code:`tf` invokes :code:`terraform`, but if you're using a
-different tool (like `OpenTofu <https://opentofu.org/>`_ you can set the
-:code:`TF_CLI` environment variable to that tool name. If you wish to know the
-exact command :code:`tf` is running set the :code:`TF_DEBUG` environment
-variable to :code:`1` and the command will printed before the it's invoked.
+different tool (like `OpenTofu <https://opentofu.org/>`_) you can set the
+:code:`TF_CLI` environment variable to that tool's name. If you wish to know
+the exact command :code:`tf` is running set the :code:`TF_DEBUG` environment
+variable to :code:`1` and the command will printed before it's invoked.
 
 License
 -------