docs: standardise to British English spelling

- personalised (not personalized) in vision.md, landing.mdx
- recognise (not recognize) in why.md

Preference for British English across all documentation.

Author: UltimaPhoenix

docs/vision.md

@@ -38,7 +38,7 @@ For engineering organisations, a hosted version will offer:
 
 - **Per-developer knowledge profiles** — each developer's knowledge map, calibrated to their
   actual stack and experience level
-- **Personalized learning paths** — structured progression tailored to the individual, not a
+- **Personalised learning paths** — structured progression tailored to the individual, not a
   generic curriculum
 - **Team-level visibility** — which topics the team is collectively strong or weak on; where
   coverage is thin; what skills are concentrated in one person

docs/why.md

@@ -59,7 +59,7 @@ This is also why devcoach teaches more than the right answer. Knowing *what* to
 
 It covers the wrong answers on purpose, too. One quiet effect of capable AI is that it spares you mistakes
 you never even see — it simply doesn't write the race condition, the N+1 query, the insecure default. That
-feels like a gift, but you also never learn why those are wrong, so you can't recognize them when one does
+feels like a gift, but you also never learn why those are wrong, so you can't recognise them when one does
 slip through. Having understood a failure mode — ideally by having met it — is what lets you catch it
 later. devcoach surfaces the anti-patterns deliberately, because the mistakes you understand are the ones
 you can prevent.

website/src/pages/landing.mdx

@@ -125,7 +125,7 @@ devcoach's bet is simple: a few minutes of genuine learning, delivered in contex
 
 ## Roadmap
 
-Free now. Future plans for team/enterprise features: integrated courses, personalized learning paths for teams, team-level visibility into knowledge gaps.
+Free now. Future plans for team/enterprise features: integrated courses, personalised learning paths for teams, team-level visibility into knowledge gaps.
 
 **[Vision & roadmap →](/docs/vision)**