MFH: r283114   Fixup to the kern_psignal manpage
MFH: r283114
  Fixup to the kern_psignal manpage

  r283105 misspelled kern_psignal as kernel_psignal in one occurrence, and
added trailing whitespace.

 While here, change 'call' to the more standard 'function', and say why
 the name was changed (taken from the commit message for r225617).

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase