docs: fix intro phrase scope and grammar in Articles IV-VI section

Agent-Logs-Url: https://github.com/github/spec-kit/sessions/1bb2bc87-968a-46f4-baac-054590a024db

Co-authored-by: mnriem <15701806+mnriem@users.noreply.github.com>

Author: Copilot

spec-driven.md

@@ -320,15 +320,15 @@ This completely inverts traditional AI code generation. Instead of generating co
 
 #### Articles IV, V & VI: Project-Specific Standards
 
-Articles IV, V, and VI are reserved for project-specific standards that teams define to suit their domain and operational needs:
+Articles IV, V, and VI are reserved for project-specific standards that teams define to suit their domain, operational, and lifecycle needs:
 
 - **Article IV** typically addresses integration concerns—such as integration testing requirements, contract testing across service boundaries, or cross-component communication standards.
 
 - **Article V** typically addresses operational concerns—such as observability, structured logging, or monitoring requirements.
 
 - **Article VI** typically addresses lifecycle concerns—such as versioning schemes, breaking-change policies, or deprecation strategies.
 
-Teams are free to name and scope these articles however best fits their project. They represent the primary customization points in the constitution where project-specific architectural principles are codified.
+Teams are free to name and scope these articles however fits their project best. They represent the primary customization points in the constitution where project-specific architectural principles are codified.
 
 #### Articles VII & VIII: Simplicity and Anti-Abstraction