Documentation: fix incorrect link in acrn-probe documentation
There is a mismatch in the 'telemetrics-clients' reference which
causes a warning (and a dead link).
@@ -173,4 +173,4 @@ Configuration files
Custom configuration file that ``acrnprobe`` reads.
-.. _`telemetrics client`: https://github.com/clearlinux/telemetrics-client
+.. _`telemetrics-client`: https://github.com/clearlinux/telemetrics-client
