PEP 783: Fix typos (#4956)

Co-authored-by: Savannah Ostrowski <savannah@python.org>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: 3 people

peps/pep-0783.rst

@@ -219,7 +219,7 @@ A Custom Interpreter Tag For Pyodide
 ------------------------------------
 
 We don't need a custom interpreter tag for Pyodide because Pyodide is CPython.
-While we do apply a few minor patches, they have no affect on the interpeter ABI
+While we do apply a few minor patches, they have no effect on the interpreter ABI
 and our long term goal is to upstream everything.
 
 Alternative Options for the Platform Tag
@@ -261,8 +261,8 @@ No patch version
 How to Teach This
 =================
 
-Fo Pyodide Users
-----------------
+For Pyodide Users
+-----------------
 We recommend the `Pyodide documentation on installing packages
 <https://pyodide.org/en/stable/usage/loading-packages.html>`__. We will make a
 table showing which ``pyemscripten`` platform version each Pyodide version is