chore(i18n): Adapted spelling of URL

Reported at Transifex.

Signed-off-by: rakekniven <2069590+rakekniven@users.noreply.github.com>

app/src/main/res/values/strings.xml

@@ -26,7 +26,7 @@
     <string name="oc_file_list_adapter_offline_operation_description_text">Pending Operation</string>
     <string name="ecosystem_apps_display_assistant">Assistant</string>
     <string name="unexpected_error_occurred">Unexpected error occurred</string>
-    <string name="app_config_base_url_title">Base Url</string>
+    <string name="app_config_base_url_title">Base URL</string>
     <string name="app_config_proxy_host_title">Proxy Host Name</string>
     <string name="app_config_proxy_port_title">Proxy Port</string>
     <string name="offline_operations_worker_notification_delete_offline_folder">Delete Offline Folder</string>