fix broken link to string template docs
fix broken link to string template docs

tsuijten/kotlin-web-site,tsuijten/kotlin-web-site,mr-max/kotlin-web-site,OryxGazella/kotlin-web-site,mr-max/kotlin-web-site,tsuijten/kotlin-web-site,voddan/kotlin-web-site,JetBrains/kotlin-web-site,meilalina/kotlin-web-site,voddan/kotlin-web-site,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,madvirus/kotlin-web-site,hltj/kotlin-web-site-cn,tsuijten/kotlin-web-site,TeamKotl/kotlin-web-site,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,TeamKotl/kotlin-web-site,belovrv/kotlin-web-site,madvirus/kotlin-web-site,belovrv/kotlin-web-site,meilalina/kotlin-web-site,mr-max/kotlin-web-site,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,voddan/kotlin-web-site,meilalina/kotlin-web-site,JetBrains/kotlin-web-site,meilalina/kotlin-web-site,OryxGazella/kotlin-web-site,mr-max/kotlin-web-site,OryxGazella/kotlin-web-site,TeamKotl/kotlin-web-site,belovrv/kotlin-web-site,madvirus/kotlin-web-site,JetBrains/kotlin-web-site,OryxGazella/kotlin-web-site,JetBrains/kotlin-web-site