add Content-Type: json to peppy methods

app/peppy_method.go

@@ -10,6 +10,8 @@ func PeppyMethod(a func(c *fasthttp.RequestCtx, db *sqlx.DB)) fasthttp.RequestHa
 	return func(c *fasthttp.RequestCtx) {
 		doggo.Incr("requests.peppy", nil, 1)
 
+		c.Response.Header.Add("Content-Type", "application/json; charset=utf-8")
+
 		// I have no idea how, but I manged to accidentally string the first 4
 		// letters of the alphabet into a single function call.
 		a(c, db)