Update azure-netapp-files.md

There were typos in the image.
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cc: @MGoedtel

Author: AndreiBarbu95

articles/aks/azure-netapp-files.md

@@ -487,7 +487,7 @@ After the PVC is created, a pod can be spun up to access the Azure NetApp Files
     spec:
       containers:
       - name: nginx
-        image: mcr.microsoft.com/oss/nginx/nginx:latest1.15.5-alpine
+        image: mcr.microsoft.com/oss/nginx/nginx:1.15.5-alpine
         resources:
           requests:
             cpu: 100m