[packages] update documentation

src/modules/packages/packages.conf

@@ -14,6 +14,7 @@
 #
 backend: dummy
 
+#
 # Often package installation needs an internet connection.
 # Since you may allow system installation without a connection
 # and want to offer OPTIONAL package installation, it's
@@ -29,11 +30,10 @@ backend: dummy
 # is an internet connection.
 #
 # Set "update_db" to 'true' for refreshing the database on the
-# target system. 
+# target system. On target installations, which got installed by
-#
+# unsquashing, a full system update may be needed. Otherwise 
-# On target installations, which got installed by unsquashing
+# post-installing additional packages may result in conflicts.
-# a full system update is may be needed, to be able to post-install
+# Therefore set also "update_system" to 'true'. 
-# additional packages. Therefore set also "update_system" to 'true'. 
 #
 skip_if_no_internet: false
 update_db: true