Fix mis-spelled Kellermann to Kellerman based on the

discussion at

  #1335

Signed-off-by: Hanson Char <hanson.char@gmail.com>

Author: hansonchar

doc/generic/pgf/CHANGELOG.md

@@ -19,6 +19,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix shadings under LuaMetaTeX
 - Resolve missing `gnuplot` plots in manual #1238
 - Fix missing inclusion of libraries in the examples at https://tikz.dev/gd-trees and https://tikz.dev/gd-usage-tikz
+- Fix mis-spelled Kellermann to Kellerman
 
 ### Changed
 

tex/generic/pgf/graphdrawing/lua/pgf/gd/trees/doc.lua

@@ -301,7 +301,7 @@ code =
 [[
 \tikz \graph [binary tree layout] {
   Knuth -> {
-    Beeton -> Kellermann [second] -> Carnes,
+    Beeton -> Kellerman [second] -> Carnes,
     Tobin -> Plass -> { Lamport, Spivak }
   }
 };\qquad
@@ -311,7 +311,7 @@ code =
                  edges={decorate,decoration={snake, post length=5pt}}]
   {
     Knuth -> {
-      Beeton -> Kellermann [second] -> Carnes,
+      Beeton -> Kellerman [second] -> Carnes,
       Tobin -> Plass -> { Lamport, Spivak }
     }
   };