Remove mention of "no wikipedia" to not contradict with ASM-22 and the actual bibliography, which contains two wikipedia sources.

Author: AMuetsch

content/contributing/creating_references.adoc

@@ -7,14 +7,12 @@ endif::[]
 
 When citing literature in the reference documentation, adhere to the following guidelines:
 
-* All sources shall be primary sources.
-Sources like Wikipedia are not allowed.
-* In the text, sources are cited using `cite:[<Key>]`, with <Key> being the unique key defined in the bibliography.bib.
 * Refer to
 //#TODO add link to latest version when available xref:https://internal.pages.asam.net/asam-editorial-guide/editorial-guide-generator/editorialguide-asciidoc/latest/Editorial_guide.html[
 rule ASM-22 of the ASAM Editorial Guide
 //]
 for detailed guidelines.
+* In the text, cite sources using `cite:[<Key>]`, with <Key> being the unique key defined in the bibliography.bib.
 
 //Replaced by ASM-22, see #75
 ////