(trivial) fix typo in requirements-hw.txt

follow-up 9ea5193329

contrib/requirements/requirements-hw.txt

@@ -12,7 +12,7 @@ keepkey>=6.3.1
 # device plugin: ledger
 # note: btchip-python only needed for "legacy" protocol and HW.1 support
 # note: ledger-bitcoin==0.2.2 added new deps we don't want to bundle. otherwise it should be ok to use.
-        see https://github.com/LedgerHQ/app-bitcoin-new/issues/192
+#       see https://github.com/LedgerHQ/app-bitcoin-new/issues/192
 btchip-python>=0.1.32
 ledger-bitcoin>=0.2.0,<0.2.2
 hidapi