Improve grammar in the import system reference documentation (GH-18209)
Replaced the period with a comma.
Automerge-Triggered-By: @Mariatta
diff --git a/Doc/reference/import.rst b/Doc/reference/import.rst
index 20a2ea6..4c36e15 100644
--- a/Doc/reference/import.rst
+++ b/Doc/reference/import.rst
@@ -857,7 +857,7 @@
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.