Fix broken link to Ubuntu bug (#83)

how-to/networking/serve-ntp-with-chrony.md

@@ -122,7 +122,7 @@ Certain `chronyc` commands are privileged and cannot be run via the network with
 `Chrony` supports various PPS types natively. It can use kernel PPS API as well as Precision Time Protocol (PTP) hardware clocks. Most general GPS receivers can be leveraged via GPSD. The latter (and potentially more) can be accessed via **SHM** or via a **socket** (recommended). All of the above can be used to augment `chrony` with additional high quality time sources for better accuracy, jitter, drift, and longer- or shorter-term accuracy. Usually, each kind of clock type is good at one of those, but non-perfect at the others. For more details on configuration see some of the external PPS/GPSD resources listed below.
 
 > **Note**:
-> As of the release of 20.04, there was a bug which - until fixed - you might want to [add this content]`(https://bugs.launchpad.net/ubuntu/+source/gpsd/+bug/1872175/comments/21)  to your `/etc/apparmor.d/local/usr.sbin.gpsd`.
+> As of the release of 20.04, there was a bug which - until fixed - you might want to [add this content](https://bugs.launchpad.net/ubuntu/+source/gpsd/+bug/1872175/comments/21)  to your `/etc/apparmor.d/local/usr.sbin.gpsd`.
 
 ### Example configuration for GPSD to feed `chrony`