Fix balance updates url endpoint

Author: DanJezeph15

pages/balance_updates/create-a-balance-update.py

@@ -8,5 +8,5 @@
     "description": "Client paid by cash.",
     "send_receipt": True,
 }
-response = requests.post('https://secure.tutorcruncher.com/api/balance_updates/', json=data, headers=headers)
+response = requests.post('https://secure.tutorcruncher.com/api/balance-updates/', json=data, headers=headers)
 pprint.pprint(response.json())

pages/balance_updates/get-a-balance-update.py

@@ -1,5 +1,5 @@
 import pprint, requests
 
 headers = {'Authorization': 'token <API KEY>'}
-r = requests.get('https://secure.tutorcruncher.com/api/balance_updates/<id>/', headers=headers)
+r = requests.get('https://secure.tutorcruncher.com/api/balance-updates/<id>/', headers=headers)
 pprint.pprint(r.json())

pages/balance_updates/list-all-balance-updates.py

@@ -1,5 +1,5 @@
 import pprint, requests
 
 headers = {'Authorization': 'token <API KEY>'}
-r = requests.get('https://secure.tutorcruncher.com/api/balance_updates/', headers=headers)
+r = requests.get('https://secure.tutorcruncher.com/api/balance-updates/', headers=headers)
 pprint.pprint(r.json())