DOCSP-13308: [MONGOSH] Create Session Object

Author: steveren

source/reference/methods.txt

@@ -963,7 +963,7 @@ Session Object Methods
 
      - Returns the most recent cluster time as seen by the session. 
 
-   * - :manual:`Session.getDatabase(<database>) </reference/method/Session>`
+   * - :manual:`Session.getDatabase() </reference/method/Session>`
 
      - Access the specified database from the session in the shell.