Update architecture.md

Co-authored-by: Patrice Chalin <[email protected]>

Author: puckpuck

content/en/docs/demo/requirements/architecture.md

@@ -54,7 +54,7 @@ solve problems in distributed applications.
 ## Feature Flag Component
 
 Feature flagging is a crucial part of cloud native application development. The
-Demo uses OpenFeature, a CNCF incubating project, to manage feature flags.
+demo uses OpenFeature, a CNCF incubating project, to manage feature flags.
 
 Feature flags can be set through the flagd configurator user interface.