Correct spelling

src/gui/accountmanager.cpp

@@ -403,7 +403,7 @@ void AccountManager::displayMnemonic(const QString& mnemonic)
     auto *widget = new QDialog;
     Ui_Dialog ui;
     ui.setupUi(widget);
-    widget->setWindowTitle(tr("End to end encryption mnemonic"));
+    widget->setWindowTitle(tr("End-to-end encryption mnemonic"));
     ui.label->setText(tr("To protect your Cryptographic Identity, we encrypt it with a mnemonic of 12 dictionary words. "
                          "Please note these down and keep them safe. "
                          "They will be needed to add other devices to your account (like your mobile phone or laptop)."));

src/gui/creds/oauth.cpp

@@ -140,7 +140,7 @@ void OAuth::start()
                         QString message = tr("<h1>Wrong account</h1>"
                                              "<p>You logged in with the account <em>%1</em>, but must log in with the account <em>%2</em>.<br>"
                                              "Please log out of %3 in another tab, then <a href='%4'>click here</a> "
-                                             "and log in with %2</p>")
+                                             "and log in with %2.</p>")
                                               .arg(user, _expectedUser, Theme::instance()->appNameGUI(),
                                                   authorisationLink().toString(QUrl::FullyEncoded));
                         httpReplyAndClose(socket, "200 OK", message.toUtf8().constData());

src/libsync/clientsideencryption.cpp

@@ -1238,7 +1238,7 @@ bool ClientSideEncryption::newMnemonicGenerated() const
 }
 
 void ClientSideEncryption::decryptPrivateKey(const AccountPtr &account, const QByteArray &key) {
-    QString msg = tr("Please enter your end to end encryption passphrase:<br>"
+    QString msg = tr("Please enter your end-to-end encryption passphrase:<br>"
                      "<br>"
                      "Username: %2<br>"
                      "Account: %3<br>")