Improve grammar in the import system reference documentation (GH-18209)

Bonifacio2 · web-flow · commit d47d0c8e9f2c · 2020-01-29T18:23:50.000-08:00
Replaced the period with a comma. Automerge-Triggered-By: @Mariatta
diff --git a/Doc/reference/import.rst b/Doc/reference/import.rst
@@ -857,7 +857,7 @@ module.  ``find_spec()`` returns a fully populated spec for the module.
 This spec will always have "loader" set (with one exception).
 
 To indicate to the import machinery that the spec represents a namespace
-:term:`portion`. the path entry finder sets "loader" on the spec to
+:term:`portion`, the path entry finder sets "loader" on the spec to
 ``None`` and "submodule_search_locations" to a list containing the
 portion.
 
