changed: command ref entry

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4790 2b470e98-0d58-463d-a4d8-8e2adae1ed80
commandref_de

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4791 2b470e98-0d58-463d-a4d8-8e2adae1ed80
changed: inform about missing German commandref and offer link to English documentation

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4792 2b470e98-0d58-463d-a4d8-8e2adae1ed80
git-svn-id: svn://svn.code.sf.net/p/fhem/code@4793 2b470e98-0d58-463d-a4d8-8e2adae1ed80