Fixes paths to symbolic links (modelica#2548)

The upload of the files failed due to some symbolic links being broken.
Also note that the upload script reads symbolic links instead of
uploading them as they are.

.CI/Jenkinsfile

@@ -40,7 +40,7 @@ pipeline {
       sh 'ln -s inheritance-modification-and-redeclaration.html Ch7.html'
       sh 'ln -s equations.html Ch8.html'
       sh 'ln -s connectors-and-connections.html Ch9.html'
-      sh 'ln -s array.html Ch10.html'
+      sh 'ln -s arrays.html Ch10.html'
       sh 'ln -s statements-and-algorithm-sections.html Ch11.html'
       sh 'ln -s functions.html Ch12.html'
       sh 'ln -s packages.html Ch13.html'
@@ -50,13 +50,14 @@ pipeline {
       sh 'ln -s state-machines.html Ch17.html'
       sh 'ln -s annotations.html Ch18.html'
       sh 'ln -s unit-expressions.html Ch19.html'
-      sh 'ln -s the-modelica-standard-library Ch20.html'
+      sh 'ln -s the-modelica-standard-library.html Ch20.html'
       sh 'ln -s glossary.html A1.html'
       sh 'ln -s modelica-concrete-syntax.html A2.html'
       sh 'ln -s modelica-dae-representation.html A3.html'
       sh 'ln -s derivation-of-stream-equations.html A4.html'
       sh 'ln -s modelica-revision-history.html A5.html'
       sh 'ln -s literature.html A6.html'
+      sh script: '! (find . -type l -xtype l | egrep \'.*\')', label: 'Verify symbolic links work'
       sh 'tar czf MLS.tar.gz *.html *.css media css/'
       archiveArtifacts artifacts: 'MLS.tar.gz', fingerprint: true
       archiveArtifacts artifacts: 'MLS.pdf', fingerprint: true