Document USE_PDF_LATEXMK feature flag
@@ -12,6 +12,8 @@ or disable one or more of these featured flags for a particular project.
Available Flags
---------------
+``USE_PDF_LATEXMK``: :featureflags:`USE_PDF_LATEXMK`
+
``USE_SPHINX_LATEST``: :featureflags:`USE_SPHINX_LATEST`
``USE_SETUPTOOLS_LATEST``: :featureflags:`USE_SETUPTOOLS_LATEST`
