Change-Id: I59be2e4c8d977d4e4c0138d57d01615781c153eb
``alembic.ini`` file itself. This can be used to produce correct pathnames
to directories and files relative to where the config file is located.
-.. tip:: Percent signs in ``alembic.ini`` configuration variables that are are
+.. tip:: Percent signs in ``alembic.ini`` configuration variables that are
not part of an interpolation token like ``%(here)s``, including percent
signs that are part of the SQLAlchemy database URL for its own URL-escaping
requirements, must themselves be escaped.