Removed a trailing space in the template builtins docs.

This trailing space may seem innocuous, but can be easily copied-and-pasted from the docs.
This can lead to bizarre File Not Found errors where the checked paths look correct, but actually aren't because
the trailing space is hard to see in an error message.

This is no longer something that has to happen now that 5c771da3 is in.

* Prevents issues with moving download locations in the future, see
  https://www.djangoproject.com/m/bad-installer.txt
* Removes a location that release managers need to update with a
  new version
* Very little use when files are hosted on PyPI (as Django's are)

Fix #20195: wrong reference in session settings documentation.

Fixed typo in transaction.Atomic docstring

Fixed #20169 -- Ensured that the WSGI request's path is correctly based on the `SCRIPT_NAME` environment parameter or the `FORCE_SCRIPT_NAME` setting, regardless of whether or not those have a trailing slash. Thanks to bmispelon for the review.

Thanks moof at metamoof.net for the report.

Without this, the 'new' assertion methods are not present with
Python 2.6.

Decimal is treated as float on SQLite, hence inspectdb can only
guess max_digits and decimal_places arguments.

Refs #5014.

Refs #19237.

Thanks Marc Aymerich for the report and the initial patch.

Thanks @carljm for the review.

Thanks nebstrebor for the report and antofik for the patch.

Thanks rshea for the draft text.

Thanks Russ for the suggestion.

Fixes #20162 -- Added a note in the documentation for `static.serve()` about the need for updating the system's map files when incorrect content types are returned. Many thanks to Simon Charette and Claude Paroz for their feedback.

The test suite doesn't seem to suffer from this removal. Tests
should probably take care themselves to clear caches if they
depend on it.