Update Markdown style guideline to clarify line wrapping instructions

Author: johlju

.github/instructions/dsc-community-style-guidelines-markdown.instructions.md

@@ -5,7 +5,7 @@ applyTo: "**/*.md"
 
 # Markdown Style Guidelines
 
-- Wrap lines at 80 characters
+- Wrap lines after word when over 80 characters
 - Use 2 spaces for indentation
 - Use '1.' for all items in ordered lists (1/1/1 numbering style)
 - Surround fenced code blocks with blank lines