[MINOR] Forgot to add port to example prop

Author: hossain-khan

sample-local.properties

@@ -3,7 +3,7 @@
 # ----------------------------------------------------
 
 ## Data based properties
-db_host=localhost:
+db_host=localhost:5432
 db_name=YourDbName
 db_username=your_db_username
 db_password=your_db_password

src/main/kotlin/dev/hossain/postgresqldelight/SportsRepository.kt

@@ -17,7 +17,7 @@ class SportsRepository constructor(
         val dataSource: DataSource = getDataSource(appConfig)
 
         val driver: SqlDriver = dataSource.asJdbcDriver()
-        
+
         execSchema(driver)
 
         val database = SportsDatabase(driver)