Fix minor typo

http/client/response.go

@@ -42,7 +42,7 @@ func (r *Response) String() string {
 	)
 }
 
-// IsNotFound returns true if the resource doesn't exists anymore.
+// IsNotFound returns true if the resource doesn't exist anymore.
 func (r *Response) IsNotFound() bool {
 	return r.StatusCode == 404 || r.StatusCode == 410
 }

locale/translations/de_DE.json

@@ -380,5 +380,5 @@
     "Website unreachable, the request timed out after %d seconds": "Webseite nicht erreichbar, die Anfrage endete nach %d Sekunden",
     "You are not authorized to access this resource (invalid username/password)": "Sie sind nicht berechtigt, auf diese Ressource zuzugreifen (Benutzername/Passwort ungültig)",
     "Unable to fetch this resource (Status Code = %d)": "Ressource konnte nicht abgerufen werden (code=%d)",
-    "Resource not found (404), this feed doesn't exists anymore, check the feed URL": "Ressource nicht gefunden (404), dieses Abonnement existiert nicht mehr, überprüfen Sie die Abonnement-URL"
+    "Resource not found (404), this feed doesn't exist anymore, check the feed URL": "Ressource nicht gefunden (404), dieses Abonnement existiert nicht mehr, überprüfen Sie die Abonnement-URL"
 }

locale/translations/fr_FR.json

@@ -380,5 +380,5 @@
     "Website unreachable, the request timed out after %d seconds": "Site web injoignable, la requête à échouée après %d secondes",
     "You are not authorized to access this resource (invalid username/password)": "Vous n'êtes pas autorisé à accéder à cette ressource (nom d'utilisateur / mot de passe incorrect)",
     "Unable to fetch this resource (Status Code = %d)": "Impossible de récupérer cette ressource (code=%d)",
-    "Resource not found (404), this feed doesn't exists anymore, check the feed URL": "Page introuvable (404), cet abonnement n'existe plus, vérifiez l'adresse du flux"
+    "Resource not found (404), this feed doesn't exist anymore, check the feed URL": "Page introuvable (404), cet abonnement n'existe plus, vérifiez l'adresse du flux"
 }

reader/browser/browser.go

@@ -14,7 +14,7 @@ var (
 	errServerFailure    = "Unable to fetch this resource (Status Code = %d)"
 	errEncoding         = "Unable to normalize encoding: %q"
 	errEmptyFeed        = "This feed is empty"
-	errResourceNotFound = "Resource not found (404), this feed doesn't exists anymore, check the feed URL"
+	errResourceNotFound = "Resource not found (404), this feed doesn't exist anymore, check the feed URL"
 	errNotAuthorized    = "You are not authorized to access this resource (invalid username/password)"
 )