update index for passwords

index.md

@@ -14,6 +14,7 @@ Bioinformatics Core assists Luxembourg Centre for Systems Biomedicine ([LCSB](ht
   * [Git clients](./external/git-clients/)
   * [LUMS account](./external/lums-passwords)
   * [Markdown markup language](./external/markdown/)
-  * [Password management](./internal/passwords/)
+  * [Password management](./external/passwords/)
+  * [Reset UL password with a Mac](./external/passwords/mac-reset)
   * [Registering human-subject data to DAISY](./external/daisy/)
   * [VPN-Cerbere](./external/vpn-cerbere-access/)