Sphinx is weird.

docs/installation/MIGRATION-1.8-to-1.9.rst

@@ -65,7 +65,7 @@ Major Changes between 1.8.x and 1.9.x
 
    a. Previously multiple config files could be read and merged to generate the final effective configuration file.
       From 1.9.0 only a single config file is ever read at a time
-      (see :ref:`merging-multiple-config-files`).
+      (see :ref:`Merging-multiple-config-files`).
 
       Managed instances which have previously allowed
       user customisation by the user creating a minimal config file which was loaded merged on top of a default system
@@ -84,7 +84,7 @@ Major Changes between 1.8.x and 1.9.x
 
       There is now a consistent and systematic approach taken to the interaction between the
       active configuration file and environment variables
-      (see :ref:`generic-environment-variable-overrides`).  Partial backwards compatibility is attempted, but
+      (see :ref:`4. Generic Environment Variable Overrides`).  Partial backwards compatibility is attempted, but
       full backwards compatibility is not possible due to the ad hoc nature of the previous implementation.
 
       The new (preferred) environment variable names are of the form ``$ODC_<env_name>_<item_name>``.
@@ -193,7 +193,7 @@ for EPSG:3577::
 
     datacube -E new spindex create 3577
 
-For more information, see :ref:`create-spatial-indexes-postgis-driver-only`.
+For more information, see :ref:`Create Spatial Indexes (Postgis Driver Only)`.
 
 Migrating (Cloning) Data From a Postgres Index
 ++++++++++++++++++++++++++++++++++++++++++++++