fix: deleted unused parameter p in a sample in extensions.md (#1513)
fix: deleted unused parameter p in a sample in extensions.md (#1513)

The unused parameter p: Int is confusing. On the first sight the reader might get the impression that p - as the port - is needed, but is actually already set within the constructor.
hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,JetBrains/kotlin-web-site,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,JetBrains/kotlin-web-site,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn