Add a missing space

modules/ROOT/pages/database-administration/index.adoc

@@ -15,7 +15,7 @@ This chapter describes how to manage local and remote standard databases, compos
 In Neo4j {neo4j-version}, each standard database contains a single graph.
 Many administrative commands refer to a specific graph by using the database name.
 
-A database defines a _transaction domain_ (a collection of graphs that can be updated within the context of a single transaction) and an _execution context_(a runtime environment for the execution of a request).
+A database defines a _transaction domain_ (a collection of graphs that can be updated within the context of a single transaction) and an _execution context_ (a runtime environment for the execution of a request).
 This means that a transaction cannot span across multiple databases.
 Similarly, a procedure is called within a database, although its logic may access data that is stored in other databases.