Offhand, the simplest change would be to remove the . from the end of the description. That isn't ideal, but... it'd be better than the current output.
Yes, I know this issue. Thanks for reminding it to me.
With the following description in PluginManagementLink, it is better now:
{{"Monitoring of memory, cpu, http requests and more in Jenkins master."}} {{ + "<a href='./monitoring/nodes'>You can also view the monitoring of builds, build queue and Jenkins nodes.</a>"}}
See this screenshot:
!management links.png!
It is not immediately obvious but the two first lines have a link to the "/monitoring" page.
And the third line has a link to the "/monitoring/nodes" page.