Add version and schema to Zoologist and Russell (#5004)

russell/theme.json

@@ -1,6 +1,6 @@
 {
-    "$schema": "https:\/\/json.schemastore.org\/theme-v1.json",
-    "version": 1,
+	"$schema": "https://json.schemastore.org/theme-v1.json",
+	"version": 1,
     "settings": {
         "color": {
             "palette": [

zoologist/theme.json

@@ -1,4 +1,6 @@
 {
+	"$schema": "https://json.schemastore.org/theme-v1.json",
+	"version": 1,
 	"customTemplates": [
 		{
 			"name": "blank",