pkg-check.8: Remove reference to old SHLIBS option and slightly reword
pkg-check.8: Remove reference to old SHLIBS option and slightly reword

en90/pkg,skoef/pkg,junovitch/pkg,khorben/pkg,Open343/pkg,junovitch/pkg,khorben/pkg,skoef/pkg,en90/pkg,khorben/pkg,Open343/pkg