snippets: rename single-var range snippet

Author: vinaycharlie01

extension/snippets/go.json

@@ -80,10 +80,10 @@
 			"body": "for ${1:_}, ${2:v} := range ${3:v} {\n\t$0\n}",
 			"description": "Snippet for a for range loop"
 		},
-		"for range channel statement": {
-			"prefix": "forrch",
+		"for range single var statement": {
+			"prefix": "forrval",
 			"body": "for ${1:v} := range ${2:v} {\n\t$0\n}",
-			"description": "Snippet for a for range loop with single variable (channel)"
+			"description": "Snippet for a for range loop with single variable (e.g. channel)"
 		},
 		"channel declaration": {
 			"prefix": "ch",