Tweak descriptions of mining parameters for example zcash.conf.

Signed-off-by: Daira Hopwood <[email protected]>

contrib/DEBIAN/examples/zcash.conf

@@ -115,10 +115,14 @@
 
 # Miscellaneous options
 
-# Enable attempt to generate zcash.
-#gen=1
+# Enable attempt to mine zcash.
+#gen=0
 
-# Enable use of a different Equihash solver to try to generate zcash faster.
+# Set the number of threads to be used for mining zcash (-1 = all cores).
+#genproclimit=1
+
+# Specify a different Equihash solver (e.g. "tromp") to try to mine zcash
+# faster when gen=1.
 #equihashsolver=default
 
 # Pre-generate this many public/private key pairs, so wallet backups will be valid for