Fix typo

Change-Id: I9040b453bba29c745d74bab54ad982913bdce00a
Reviewed-on: https://gerrit.libreoffice.org/70999Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Julien Nabet <serval2412@yahoo.fr>

filter/source/xslt/odf2xhtml/export/common/table_of_content.xsl

@@ -490,7 +490,7 @@ Scenarios unmatched:
 
         <xsl:variable name="text">
             <xsl:choose>
-            <!-- heuristic assumption that first in a content table row, there is numbering (if at all) and than the text,
+            <!-- heuristic assumption that first in a content table row, there is numbering (if at all) and then the text,
             furthermore that a tab will separate the to be neglected page number -->
                 <xsl:when test="text:tab">
                     <xsl:call-template name="write-text-without-line-numbers">