Merge 4.1 into 4.2 (#2831)

Author: GromNaN

docs/eloquent-models/schema-builder.txt

@@ -324,6 +324,8 @@ field:
 To learn more about these indexes, see :manual:`Index Properties </core/indexes/index-properties/>`
 in the {+server-docs-name+}.
 
+.. _laravel-eloquent-geospatial-index:
+
 Create a Geospatial Index
 ~~~~~~~~~~~~~~~~~~~~~~~~~