Update link to pneumatics manual (#2154)

Author: sciencewhiz

source/docs/hardware/hardware-basics/wiring-pneumatics.rst

@@ -1,7 +1,7 @@
 Wiring Pneumatics
 =================
 
-.. hint:: For pneumatics safety & mechanical requirements, consult this year's Robot Construction rules. For mechanical design guidelines, the FIRST Pneumatics Manual is located `here (last updated 2017) <https://firstfrc.blob.core.windows.net/frc2017/pneumatics-manual.pdf>`__
+.. hint:: For pneumatics safety & mechanical requirements, consult this year's Robot Construction rules. For mechanical design guidelines, the FIRST Pneumatics Manual is located `here <https://www.firstinspires.org/sites/default/files/uploads/resource_library/frc/technical-resources/frc_pneumatics_manual.pdf>`__
 
 Wiring Overview
 ---------------