Improve English in Kotlin/Native as an Apple framework tutorial (#2372)
Improve English in Kotlin/Native as an Apple framework tutorial (#2372)

* Improve English to make it slightly easier to read

* Update docs/topics/apple-framework.md

Fix typo

* Update docs/topics/apple-framework.md

Missing "the"

* Update apple-framework.md

Co-authored-by: Andrey Polyakov <9f4bf2072f8b677765ab09f044bf5b0e5c8f952e@gmail.com>
hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,JetBrains/kotlin-web-site