Fix bug in Segment event JSON examples (#1019)

Author: cperriam-rc

code_blocks/integrations/third-party-integrations/segment_5.json

@@ -3,7 +3,8 @@
         "user_id": "$RCAnonymousID:87c6049c58069238dce29853916d624c",
         "event": "rc_trial_started_event",
         "properties": {
-            "price": 0.0,
+            "revenue": 0.0,
+            "currency": "USD",
             "store": "APP_STORE",
             "expires_at": 1556693063,
             "entitlement": "premium",

code_blocks/integrations/third-party-integrations/segment_6.json

@@ -3,7 +3,8 @@
         "user_id": "$RCAnonymousID:87c6049c58069238dce29853916d624c",
         "event": "rc_trial_converted_event",
         "properties": {
-            "price": 7.99,
+            "revenue": 7.99,
+            "currency": "USD",
             "store": "APP_STORE",
             "expires_at": 1558701211,
             "entitlement": "premium",

code_blocks/integrations/third-party-integrations/segment_8.json

@@ -3,7 +3,8 @@
         "user_id": "$RCAnonymousID:87c6049c58069238dce29853916d624c",
         "event": "rc_renewal_event",
         "properties": {
-            "price": 7.99,
+            "revenue": 7.99,
+            "currency": "USD",
             "store": "APP_STORE",
             "expires_at": 1558699811,
             "entitlement": "premium",

code_blocks/integrations/third-party-integrations/segment_9.json

@@ -3,7 +3,8 @@
         "user_id": "$RCAnonymousID:87c6049c58069238dce29853916d624c",
         "event": "rc_cancellation_event",
         "properties": {
-            "price": 0.0,
+            "revenue": 0.0,
+            "currency": "USD",
             "store": "APP_STORE",
             "expires_at": 1558116196,
             "entitlement": "premium",