Guidebook bits for Jon Wätte (Jon W{tte)

There is no unintentional spelling mistake.
Close #1523

doc/Guidebook.mn

@@ -6549,7 +6549,7 @@ developed NetHack 3.1 for the Amiga.
 \fBCarl Schelin\fP, \fBStephen Spackman\fP, \fBSteve VanDevender\fP,
 and \fBPaul Winner\fP, ported NetHack 3.1 to the PC.
 .pg
-\fBJon W{tte\fP and \fBHao-yang Wang\fP, with help from \fBRoss Brown\fP,
+\fB\*(JW\fP and \fBHao-yang Wang\fP, with help from \fBRoss Brown\fP,
 \fBMike Engber\fP, \fBDavid Hairston\fP, \fBMichael Hamel\fP,
 \fBJonathan Handler\fP, \fBJohnny Lee\fP, \fBTim Lennan\fP, \fBRob Menke\fP,
 and \fBAndy Swanson\fP, developed NetHack 3.1 for the Macintosh,
@@ -6907,7 +6907,7 @@ Bart House	John Kallen	Pat Rankin
 Benson I. Margulies	John Rupley	Patric Mueller
 Bill Dyer	John S. Bien	Paul Winner
 Boudewijn Waijers	Johnny Lee	Pierre Martineau
-Bruce Cox	Jon W{tte	Ralf Brown
+Bruce Cox	\*(JW	Ralf Brown
 Bruce Holloway	Jonathan Handler	Ray Chason
 Bruce Mewborne	Joshua Delahunty	Richard Addison
 Cameron Root	Karl Garrison	Richard Beigel

doc/tmac.nh

@@ -139,4 +139,6 @@
 .\" before/after last/first 2 characters of a word.
 .ie \n(.g .hy 12
 .el       .hy 14
+.ds JW Jon W{tte\"
+.if \n(.g .if !'\*[.T]'ascii' .ds Jw Jon W\(:atte
 .\"tmac.nh/"