style: remove trailing whitespace (#12303)

plugins/vim-interaction/README.md

@@ -3,7 +3,7 @@
 The plugin presents a function called `callvim` whose usage is:
 
     usage: callvim [-b cmd] [-a cmd] [file ... fileN]
-    
+
       -b cmd     Run this command in GVIM before editing the first file
       -a cmd     Run this command in GVIM after editing the first file
       file       The file to edit

plugins/vim-interaction/vim-interaction.plugin.zsh

@@ -2,7 +2,7 @@
 # See README.md
 #
 # Derek Wyatt (derek@{myfirstnamemylastname}.org
-# 
+#
 
 function callvim {
   if [[ $# == 0 ]]; then