remove optional xml prologue from docs

Author: stefan-wenig

docs/artifact-configuration/examples.md

@@ -9,18 +9,6 @@ datasource: tables/artifact-configuration
 
 ## Syntax
 
-{:.panel.info}
-> **Examples are shortened**
->
-> For the sake of clarity, all examples omit the XML prolog. A complete artifact configuration looks like this:
-> 
-> ~~~ xml
-> <?xml version="1.0" encoding="utf-8" ?>
-> <artifact-configuration xmlns="http://signpath.io/artifact-configuration/v1">
->   <!-- ... -->
-> </artifact-configuration>
-> ~~~
-
 ## Basic examples
 
 ### Predefined configuration for single Portable Executable file

docs/artifact-configuration/syntax.md

@@ -14,7 +14,6 @@ Artifact configurations are XML files with the schema `http://signpath.io/artifa
 They contain exactly one file element representing the artifact. 
 
 ~~~ xml
-<?xml version="1.0" encoding="utf-8" ?>
 <artifact-configuration xmlns="http://signpath.io/artifact-configuration/v1">
   <root-file-element>
     ...
@@ -28,7 +27,6 @@ They contain exactly one file element representing the artifact.
 > If autocomplete does not work in your schema-aware editor, try adding the `xsi:schemaLocation` attribute to the root element.
 >
 > ~~~xml
-> <?xml version="1.0" encoding="utf-8"?>
 > <artifact-configuration
 >   xmlns="http://signpath.io/artifact-configuration/v1"
 >   xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance"
@@ -39,7 +37,7 @@ They contain exactly one file element representing the artifact.
 
 ## Basic artifact structure {#structure}
 
-**Note: The following example fragments show only the root file element.** XML prologue and `<artifact configuration>` element are omitted for clarity.
+**Note: The following example fragments show only the root file element.** The `<artifact configuration>` element is omitted for clarity.
 
 Several [element types](reference#file-elements) are available of various supported file types.
 

docs/trusted-build-systems/azure-devops.md

@@ -11,7 +11,6 @@ description: Azure DevOps
 * In SignPath: [Use the predefined Trusted Build System](/trusted-build-systems#configuration) _Azure DevOps (dev.azure.com)_.
 * Create an artifact configuration with the following format:
     ```xml
-    <?xml version="1.0" encoding="utf-8" ?>
     <artifact-configuration xmlns="http://signpath.io/artifact-configuration/v1">
       <zip-file>
         <directory path="*">