Remove extra quotes

Signed-off-by: Roger Sheen <roger@infotexture.net>

resources/ditaotdaykeys/dita-ot-day-2024-keys.ditamap

@@ -59,11 +59,11 @@ referencing in PDF output generated by the DITA-OT. Together with the DITA-OT th
     <topicmeta>
       <linktext>Using DITA Open Toolkit Project to Implement a Publishing Service
 in a Commercial Application</linktext>
-      <shortdesc> "I will demonstrate a plugin, which adds functions to the DITA-OT that are
+      <shortdesc> I will demonstrate a plugin, which adds functions to the DITA-OT that are
 very useful in particular for industry and reseach. Out of many helpful extensions there are
-mechanisms like ""Auto-Bibliography Generation"", ""Auto-Image Sizing"", Page Control (e.g.
-""Landscape page in a flow of upright pages"") and many more. All extensions are convertible
-into DOCX, HTML and CHM. A full documentation is available for all implemented extensions."
+mechanisms like "Auto-Bibliography Generation", "Auto-Image Sizing", Page Control (e.g.
+"Landscape page in a flow of upright pages") and many more. All extensions are convertible
+into DOCX, HTML and CHM. A full documentation is available for all implemented extensions.
 </shortdesc>
       <author> Helmut Scherzer </author>
     </topicmeta>