fix indentation and remove ref to ssstack (#5256)

docs/src/developers_guide/contributing_ci_tests.rst

@@ -67,21 +67,14 @@ or simply::
 
 and add the changed lockfiles to your pull request.
 
-.. note::
-
-   If your installation of conda runs through Artifactory or another similar
-   proxy then you will need to amend that lockfile to use URLs that Github
-   Actions can access. A utility to strip out Artifactory exists in the
-   ``ssstack`` tool.
-
 New lockfiles are generated automatically each week to ensure that Iris continues to be
 tested against the latest available version of its dependencies.
 Each week the yaml files in ``requirements`` are resolved by a GitHub Action.
 If the resolved environment has changed, a pull request is created with the new lock files.
 The CI test suite will run on this pull request. If the tests fail, a developer
-will need to create a new branch based off the ``auto-update-lockfiles`` branch 
+will need to create a new branch based off the ``auto-update-lockfiles`` branch
 and add the required fixes to this new branch. If the fixes are made to the
-``auto-update-lockfiles`` branch these will be overwritten the next time the 
+``auto-update-lockfiles`` branch these will be overwritten the next time the
 Github Action is run.
 
 

docs/src/developers_guide/contributing_graphics_tests.rst

@@ -36,9 +36,9 @@ The results of the failing image tests will now be available in
 Reviewing Failing Tests
 -----------------------
 
-#. Run ``iris/lib/iris/tests/graphics/idiff.py`` with python, e.g.:
+#. Run ``iris/lib/iris/tests/graphics/idiff.py`` with python, e.g.::
 
-    python idiff.py
+     python idiff.py
 
    This will open a window for you to visually inspect
    side-by-side **old**, **new** and **difference** images for each failed