Clean up verilog-mode.el documentation examples to match behavior.

Clean up verilog-mode.el documentation examples to match behavior.

* verilog-mode.el (verilog-auto, verilog-auto-arg)
(verilog-auto-ascii-enum, verilog-auto-inout)
(verilog-auto-inout-comp, verilog-auto-inout-in)
(verilog-auto-inout-modport, verilog-auto-inout-module)
(verilog-auto-inout-param, verilog-auto-input)
(verilog-auto-insert-lisp, verilog-auto-inst)
(verilog-auto-inst-param, verilog-auto-inst-param-value)
(verilog-auto-output, verilog-auto-output-every, verilog-auto-reg)
(verilog-auto-reg-input, verilog-auto-reset, verilog-auto-sense)
(verilog-auto-tieoff, verilog-auto-undef, verilog-auto-unused)
(verilog-auto-wire, verilog-inject-auto, verilog-read-sub-decls):
Clean up documentation examples to match behavior.