Merge pull request #419 from rolfedh/remove-must

Remove "must" from wording around user-replaceable values

Author: mportman12

supplementary_style_guide/style_guidelines/formatting.adoc

@@ -107,7 +107,7 @@ Write all titles and headings, including the titles of product documentation gui
 [[user-replaced-values]]
 == User-replaced values
 
-A _user-replaced value_, also known as a replaceable or variable value, is a value that the user must replace with a value that is relevant for their situation. User-replaced values are often found in places such as code blocks, file paths, and commands.
+A _user-replaced value_, also known as a replaceable or variable value, is a placeholder that the user replaces with a value that is relevant for their situation. User-replaced values are often found in places such as code blocks, file paths, and commands.
 
 Use descriptive names for user-replaced values and follow this general format: _<value_name>_.