Build Instructions: Fix to work with the latest Makefile

docs/build.rst

@@ -17,18 +17,20 @@ installed.
 Render PEPs locally
 -------------------
 
-1. Create a virtual environment and install requirements.
-
-   The rest of these instructions assume an active virtual environment named
-   ``venv``.
-   The Python Packaging User Guide contains
-   `instructions on creating a virtual environment <https://packaging.python.org/en/latest/guides/installing-using-pip-and-virtual-environments/#creating-a-virtual-environment>`__
-   for reference.
+1. Create a virtual environment and install requirements:
 
    .. code-block:: console
 
-      (venv) $ python -m pip install --upgrade pip
-      (venv) $ python -m pip install -r requirements.txt
+      $ make venv
+
+   If you don't have access to ``make``, run:
+
+   .. code-block:: ps1con
+
+      PS> python -m venv .venv
+      PS> .\.venv\Scripts\activate
+      (venv) PS> python -m pip install --upgrade pip
+      (venv) PS> python -m pip install -r requirements.txt
 
 2. **(Optional)** Delete prior build files.
    Generally only needed when making changes to the rendering system itself.
@@ -41,7 +43,7 @@ Render PEPs locally
 
    .. code-block:: console
 
-      (venv) $ make render
+      $ make render
 
    If you don't have access to ``make``, run: