fix typo in docs - simulating.rst

Author: geraintpalmer

docs/Features/simulating.rst

@@ -54,12 +54,12 @@ This method simulates the system from an empty system. The simulation terminates
     N = ciw.create_network(params)
     Q = ciw.Simulation(N)
 
-    Q.simulate_until_maxcustomers(20, method='Finish')
+    Q.simulate_until_max_customers(20, method='Finish')
 
 There are three methods of simulating for a maximum number of customers, specified by the :code:`method` keyword argument:
  - Finish: Simulates until :code:`max_customers` has reached the Exit Node.
  - Arrive: Simulates until :code:`max_customers` have spawned at the Arrival Node.
- - Accept:  Simulates until :code:`max_customers` have been spawned and accepted (not rejected) at the Arrival Node.
+ - Accept: Simulates until :code:`max_customers` have been spawned and accepted (not rejected) at the Arrival Node.
 
 Keyword arguments:
  - :code:`max_customers`: REQUIRED. The maximum number of customers.