NO ISSUE: Consolidate the vector index files (#419)

* TEMP: Preview config for feature branch
* Fix links, tags, anchors, and includes
* Tweak examples for consistency and formatting
* Move composite examples to separate files — use the View button as intended

Author: simon-dew

modules/n1ql/pages/n1ql-language-reference/createindex.adoc

@@ -719,7 +719,7 @@ include::example$n1ql-language-reference/create-idx-include.n1ql[]
 For more examples of indexes where the leading key may be missing, see xref:n1ql:n1ql-language-reference/selectintro.adoc#index-selection[Index Selection].
 ====
 
-[[eex-create-rgb-idx]]
+[[ex-create-rgb-idx]]
 .Create a composite vector index
 ====
 For this example, you must install the vector sample data as described in {prerequisites}[Prerequisites].
@@ -729,7 +729,7 @@ Create a composite vector index that indexes the vector field named `colorvect_l
 
 [source,sqlpp]
 ----
-include::vector-index:example$gsi-vector-idx-examples.sqlpp[tag=create-vectors-idx]
+include::vector-index:example$gsi-vector-idx-examples.sqlpp[tag=create-rgb-idx]
 ----
 ====
 

modules/n1ql/pages/n1ql-language-reference/dropindex.adoc

@@ -34,7 +34,7 @@ For compatibility with legacy versions of Couchbase Server, you can also use DRO
 To use the {doctitle} statement, you must have the _Query Manage Index_ privilege on the keyspace or bucket.
 For more details about user roles, see
 {authorization-overview}[Authorization].
-// end::prerequisites
+// end::prerequisites[]
 
 == Syntax