Fix typo in translatable

    <string name="downloads_label">Downloads</string>

    <!-- Title of the documents application [CHAR LIMIT=32] -->

    <string name="app_label" translateable="false">@string/files_label</string>

    <string name="app_label" translatable="false">@string/files_label</string>

    <!-- Title of the documents application [CHAR LIMIT=32] -->

    <string name="launcher_label" translateable="false">@string/files_label</string>

    <string name="launcher_label" translatable="false">@string/files_label</string>

    <!-- Action bar title prompting user to choose a location to open a document from [CHAR LIMIT=32] -->

    <string name="title_open">Open from</string>