doc: fix broken Android building link

Author: nikwen

doc/api/os.md

@@ -1373,7 +1373,7 @@ The following process scheduling constants are exported by
   </tr>
 </table>
 
-[Android building]: https://github.com/nodejs/node/blob/HEAD/BUILDING.md#androidandroid-based-devices-eg-firefox-os
+[Android building]: https://github.com/nodejs/node/blob/HEAD/BUILDING.md#android
 [EUID]: https://en.wikipedia.org/wiki/User_identifier#Effective_user_ID
 [`SystemError`]: errors.md#class-systemerror
 [`process.arch`]: process.md#processarch

doc/api/process.md

@@ -4268,7 +4268,7 @@ cases:
   code will be `128` + `6`, or `134`.
 
 [Advanced serialization for `child_process`]: child_process.md#advanced-serialization
-[Android building]: https://github.com/nodejs/node/blob/HEAD/BUILDING.md#androidandroid-based-devices-eg-firefox-os
+[Android building]: https://github.com/nodejs/node/blob/HEAD/BUILDING.md#android
 [Child Process]: child_process.md
 [Cluster]: cluster.md
 [Duplex]: stream.md#duplex-and-transform-streams