Fix typos in some strings

This commit fixes some typos that I've stumbled upon.

src/components/views/dialogs/ServerPickerDialog.tsx

@@ -153,7 +153,7 @@ export default class ServerPickerDialog extends React.PureComponent<IProps, ISta
         >
             <form className="mx_Dialog_content" id="mx_ServerPickerDialog" onSubmit={this.onSubmit}>
                 <p>
-                    {_t("We call the places you where you can host your account ‘homeservers’.")} {text}
+                    {_t("We call the places where you can host your account ‘homeservers’.")} {text}
                 </p>
 
                 <StyledRadioButton