chkconfig.ltx: check for the psyr fonts

- we use the psyr fonts for the bullets (or example in the EmbeddedObjects manual), thus we need to check for them

lib/chkconfig.ltx

@@ -419,6 +419,7 @@
 \TestPackage{MinionPro}
 \TestFont[rzmnr]{minion2newtx}
 \TestPackage{newtxmath}
+\TestFont[psyr]{symbol}
 \TestPackage{tgadventor}
 \TestPackage{tgbonum}
 \TestPackage{tgchorus}