[pim/kmail] doc/kmail2: Minor: Respect KDE HIG, fix string

[Kevin Funk]

Git commit 011acfc7ebadef56b274bbbe61643d466599a26b by Kevin Funk.
Committed on 06/10/2021 at 15:06.
Pushed by kfunk into branch 'master'.

Minor: Respect KDE HIG, fix string

M  +1    -1    doc/kmail2/configure.docbook

https://invent.kde.org/pim/kmail/commit/011acfc7ebadef56b274bbbe61643d466599a26b

diff --git a/doc/kmail2/configure.docbook b/doc/kmail2/configure.docbook
index 13cfb8c9c..4916acd8b 100644
--- a/doc/kmail2/configure.docbook
+++ b/doc/kmail2/configure.docbook
@@ -3470,7 +3470,7 @@ modifying it by hand.</para>
     <variablelist>
         
       <varlistentry>
-        <term><guilabel>Open external composer</guilabel></term>
+        <term><guilabel>Open External Composer</guilabel></term>
         <listitem>
           <para>
             Select this option to force the composer to open an external text editor