Reorganize flowchart for readability (#7561)

gpdb-doc/dita/admin_guide/highavail/topics/g-recovering-a-failed-segment.xml

@@ -24,9 +24,9 @@
         <!-- 2 image settings online and PDF width="660" height="630" -->
         <title>Segment Failure Troubleshooting Matrix</title>
         <image otherprops="op-print" href="../../graphics/recovermatrix.png" placement="break"
-          width="460" height="439px" id="image_cdg_nfp_35"/>
+          width="460" id="image_cdg_nfp_35"/>
         <image otherprops="op-help" href="../../graphics/recovermatrix.png" placement="break"
-          width="680" height="649" id="image_cdg_nfp_34"/>
+          width="680" id="image_cdg_nfp_34"/>
 
       </fig></p>
   </body>