Update meta.json

Author: TravisEz13

release/preview/alpine311/meta.json

@@ -2,7 +2,7 @@
     "IsLinux" : true,
     "UseLinuxVersion": false,
     "PackageFormat": "powershell-${PS_VERSION}-linux-alpine-x64.tar.gz",
-    "osVersion": "Alpine",
+    "osVersion": "Alpine 3.11",
     "tagTemplates": [
         "#psversion#-alpine-#tag#",
         "preview-alpine-#shorttag#"