chore: update sample configs

Author: SvetoslavTsenov

samples/config/appium.capabilities.json

@@ -89,31 +89,31 @@
     },
     "sim.iPhone7": {
         "platformName": "iOS",
-        "platformVersion": "12.*",
+        "platformVersion": "/12.*/",
         "deviceName": "iPhone 7",
         "noReset": false,
         "fullReset": false,
         "app": ""
     },
     "sim.iPhone8": {
         "platformName": "iOS",
-        "platformVersion": "12*",
+        "platformVersion": "/12*/",
         "deviceName": "iPhone 8",
         "noReset": false,
         "fullReset": false,
         "app": ""
     },
     "sim.iPhoneX": {
         "platformName": "iOS",
-        "platformVersion": "12*",
+        "platformVersion": "/12*/",
         "deviceName": "iPhone X",
         "noReset": false,
         "fullReset": false,
         "app": ""
     },
     "sim.iPhoneXS": {
         "platformName": "ios",
-        "platformVersion": "12*",
+        "platformVersion": "/12*/",
         "deviceName": "iPhone XS",
         "noReset": false,
         "fullReset": false,