reduce IGNORE line and fix typos after hunspell updates

(cherry picked from commit af24613)

Author: eseyffarth

src/common/de/agent_single_folder.asciidoc

@@ -1,5 +1,5 @@
 // -*- coding: utf-8 -*-
-// IGNORE Veritas
+// IGNORE 
 // NONASCII
 include::global_attr.adoc[]
 = Den Linux-Agenten unprivilegiert ausführen

src/common/en/agent_single_folder.asciidoc

@@ -1,5 +1,5 @@
 // -*- coding: utf-8 -*-
-// IGNORE Veritas
+// IGNORE 
 // NONASCII
 include::global_attr.adoc[]
 = Unprivileged execution of the Linux agent