Fixed a typo

Signed-off-by: Vishal Rana <vr@labstack.com>

Author: vishr

echo.go

@@ -108,7 +108,7 @@ func New() (e *Echo) {
 	e.HTTPErrorHandler(func(err error, c *Context) {
 		if err != nil {
 			// TODO: Warning
-			log.Printf("echo: %s", color.Yellow("HTTP error handler not registered"))
+			log.Printf("echo: %s", color.Yellow("http error handler not registered"))
 			http.Error(c.Response, err.Error(), http.StatusInternalServerError)
 		}
 	})

response.go

@@ -23,7 +23,7 @@ func (r *response) Header() http.Header {
 func (r *response) WriteHeader(n int) {
 	if r.committed {
 		// TODO: Warning
-		log.Printf("echo: %s", color.Yellow("echo: response already committed"))
+		log.Printf("echo: %s", color.Yellow("response already committed"))
 		return
 	}
 	r.status = n