Fix TC_MEC_SRV_RNIS_012_BR schema for _self link

SRV/RNIS/RnisSubscriptions_BI_BO.robot

@@ -8,8 +8,6 @@ Resource    ../../GenericKeywords.robot
 Resource    resources/RadioNetworkInformationAPI.robot
 Library     REST    ${MEC-APP_SCHEMA}://${MEC-APP_HOST}:${MEC-APP_PORT}    ssl_verify=false
 
-
-
 *** Test Cases ***
 Request RNIS subscription list using bad parameters
     [Documentation]   TC_MEC_SRV_RNIS_011_BR
@@ -25,10 +23,9 @@ Create RNIS subscription using bad parameters
     ...  Check that the RNIS service responds with an error when it receives a request to create a new RNIS subscription with a wrong format
     ...  ETSI GS MEC 012 2.1.1, clause 7.6.3.4
     ...  Reference https://forge.etsi.org/rep/mec/gs012-rnis-api/blob/automatic_generation/RniAPI.yaml
-    Post RNIS subscription request    {"CellChangeSubscription": {"subscriptionType": "CelCangeSubscription", "callbackReference": "${HREF}", "_links": {"self": "${LINKS_SELF}"}, "filterCriteria": {"appInsId": "01", "associateId": [{"type": "UE_IPV4_ADDRESS", "value": 1}], "plmn": {"mcc": "01", "mnc": "001"}, "cellId": ["800000"], "hoStatus": "COMPLETED"}, "expiryDeadline": {"seconds": 1577836800, "nanoSeconds": 0}}}
+    Post RNIS subscription request    {"CellChangeSubscription": {"subscriptionType": "CelCangeSubscription", "callbackReference": "${HREF}", "_links": {"self": { "href": "${LINKS_SELF}" } }, "filterCriteria": {"appInsId": "01", "associateId": [{"type": "UE_IPV4_ADDRESS", "value": 1}], "plmn": {"mcc": "01", "mnc": "001"}, "cellId": ["800000"], "hoStatus": "COMPLETED"}, "expiryDeadline": {"seconds": 1577836800, "nanoSeconds": 0}}}
     Check HTTP Response Status Code Is    400
 
-
 *** Keywords ***
 Get RNIS subscription list with wrong parameter
     Should Be True    ${PIC_RNIS_SPECIFIC_SUBSCRIPTION} == 1