[office/kmymoney] doc: doc: add missing paragraph related to VAT net amount mode

[Ralf Habacker]

Git commit 07d59db24a42b4cf5550050be1ecef0813a51dc2 by Ralf Habacker.
Committed on 07/01/2026 at 07:11.
Pushed by habacker into branch 'master'.

doc: add missing paragraph related to VAT net amount mode

M  +6    -1    doc/details-categories.docbook

https://invent.kde.org/office/kmymoney/-/commit/07d59db24a42b4cf5550050be1ecef0813a51dc2

diff --git a/doc/details-categories.docbook b/doc/details-categories.docbook
index 98374573b..e093dc139 100644
--- a/doc/details-categories.docbook
+++ b/doc/details-categories.docbook
@@ -161,7 +161,12 @@
   part, create a second split with the VAT account and VAT amount and reduce the
   category amount.
 </para>
- 
+<para>
+  In contrast, if you have selected the net amount entry method, the amount you
+  enter is treated as excluding VAT. &kmymoney; will calculate the VAT portion,
+  create a separate split for the VAT account, and leave the category amount as
+  entered.
+</para>
 <para>
   The same applies to income categories but the other way around. Hope that
   makes sense.