clarify how to name indexes (neo4j#1283)

Author: JPryce-Aklundh

modules/ROOT/pages/indexes/search-performance-indexes/managing-indexes.adoc

@@ -16,10 +16,10 @@ For information about how search-performance indexes are used in Cypher queries,
 [[create-indexes]]
 == +CREATE INDEX+
 
-Creating an index is done with the `CREATE ... INDEX ...` command.
+Creating an index is done with the `CREATE [index_type] INDEX [index_name]` command.
 If no index type is specified in the create command a xref:indexes/search-performance-indexes/managing-indexes.adoc#create-range-index[range index] will be created.
 
-Best practice is to give the index a name when it is created.
+It is recommended to give the index a name when it is created.
 If the index is not explicitly named, it gets an auto-generated name.
 
 [IMPORTANT]

modules/ROOT/pages/indexes/semantic-indexes/full-text-indexes.adoc

@@ -31,7 +31,7 @@ CREATE (nilsE:Employee {name: "Nils-Erik Karlsson", position: "Engineer", team:
 [[create-full-text-indexes]]
 == Create full-text indexes
 
-Full-text indexes are created with the `CREATE FULLTEXT INDEX` command.
+Full-text indexes are created with the `CREATE FULLTEXT INDEX [index_name]` command.
 It is recommended to to give the index a name when it is created.
 If no name is given when created, a random name will be assigned to the full-text index.
 

modules/ROOT/pages/indexes/semantic-indexes/vector-indexes.adoc

@@ -74,7 +74,7 @@ It can be used to index nodes or relationships by `LIST<INTEGER | FLOAT>` proper
 Note that the available vector index providers (`vector-2.0` (default) and `vector-1.0` (deprecated)) support different index schemas, property value types, and vector dimensions.
 For more information, see xref:indexes/semantic-indexes/vector-indexes.adoc#vector-index-providers[].
 
-A vector index is created by using the `CREATE VECTOR INDEX` command.
+A vector index is created by using the `CREATE VECTOR INDEX [index_name]` command.
 It is recommended to give the index a name when it is created.
 If no name is given when created, a random name will be assigned.
 As of Neo4j 5.16, the index name can also be given as a parameter: `CREATE VECTOR INDEX $name ...`.