Rename translation lang-file attribute to lang-files

packages/app-shell/src/app-shell.js

@@ -74,7 +74,7 @@ export class AppShell extends ScopedElementsMixin(DBPLitElement) {
         this.initateOpenMenu = false;
 
         this.auth = {};
-        this.langFile = '';
+        this.langFiles = '';
     }
 
     static get scopedElements() {
@@ -272,7 +272,7 @@ export class AppShell extends ScopedElementsMixin(DBPLitElement) {
             buildTime: {type: String, attribute: 'build-time'},
             env: {type: String},
             auth: {type: Object},
-            langFile: {type: String, attribute: 'lang-file'},
+            langFiles: {type: String, attribute: 'lang-files'},
         };
     }
 

packages/common/src/translation.js

@@ -8,7 +8,7 @@ export class Translation extends DBPLitElement {
         super();
         this.key = '';
         this.lang = '';
-        this.langFile = '';
+        this.langFiles = '';
         this.interpolation = '';
     }
 
@@ -17,7 +17,7 @@ export class Translation extends DBPLitElement {
             ...super.properties,
             key: {type: String},
             lang: {type: String},
-            langFile: {type: String, attribute: 'lang-file'},
+            langFiles: {type: String, attribute: 'lang-files'},
             interpolation: {type: Object, attribute: 'var'},
         };
     }
@@ -33,7 +33,7 @@ export class Translation extends DBPLitElement {
 
     connectedCallback() {
       super.connectedCallback();
-      this._i18n = createInstanceAsync(this.langFile);
+      this._i18n = createInstanceAsync(this.langFiles);
     }
 
     update(changedProperties) {