tdf#100070 - Corrected example for WEEKNUM using System 1

Change-Id: Ie659fa5dbc9dcd4cb5c3b4d6b15a6b045a3cf36e
Reviewed-on: https://gerrit.libreoffice.org/c/help/+/114187
Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
diff --git a/source/text/scalc/01/func_weeknum.xhp b/source/text/scalc/01/func_weeknum.xhp
index a23d5cd..99a089a 100644
--- a/source/text/scalc/01/func_weeknum.xhp
+++ b/source/text/scalc/01/func_weeknum.xhp
@@ -174,7 +174,7 @@
<embed href="text/scalc/01/04060102.xhp#datenumberwarn"/>
<embed href="text/scalc/01/common_func.xhp#sectionexample"/>
<paragraph role="paragraph" id="par_id3150704" xml-lang="en-US"><item type="input">=WEEKNUM(DATE(1995;1;1);1)</item>  returns 1</paragraph>
<paragraph role="paragraph" id="par_id3149792" xml-lang="en-US"><item type="input">=WEEKNUM(DATE(1995;1;1);2)</item>  returns 52. If the week starts on Monday, Sunday belongs to the last week of the previous year.</paragraph>
<paragraph role="paragraph" id="par_id3149792" xml-lang="en-US"><item type="input">=WEEKNUM(DATE(1995;1;1);2)</item>  returns 1. Using System 1, the week containing January 1 is the first week of the year.</paragraph>
<paragraph role="paragraph" id="par_id3149793" xml-lang="en-US"><item type="input">=WEEKNUM(DATE(1995;1;1);21)</item>  returns 52. Week 1 starts on Monday, 1995-01-02.</paragraph>
<paragraph role="paragraph" id="par_id3149794" xml-lang="en-US"><item type="input">=WEEKNUM(DATE(1999;1;1);21)</item>  returns 53. Week 1 starts on Monday, 1999-01-04.</paragraph>
<section id="relatedtopics">