Fixes syntax issues in quickstart (#2448)

Quotes in the name and packages field causes an "Invalid distribution name or version syntax" if you follow this quickstart guide directly. pep517.build also requires you to specify the directory.

docs/userguide/quickstart.rst

@@ -43,11 +43,11 @@ such as metadata, contents, dependencies, etc. Here we demonstrate the minimum
 .. code-block:: ini
 
     [metadata]
-    name = "mypackage"
+    name = mypackage
     version = 0.0.1
 
     [options]
-    packages = "mypackage"
+    packages = mypackage
     install_requires =
       requests
       importlib; python_version == "2.6"
@@ -63,7 +63,7 @@ Then, you need an installer, such as `pep517 <https://pypi.org/project/pep517/>`
 which you can obtain via ``pip install pep517``. After downloading it, invoke
 the installer::
 
-    python -m pep517.build
+    python -m pep517.build .
 
 You now have your distribution ready (e.g. a ``tar.gz`` file and a ``.whl``
 file in the ``dist`` directory), which you can upload to PyPI!