Merge pull request #1017 from rcalago/master

Update on README.md

Author: lor6

core-kotlin-modules/core-kotlin-io/README.md

@@ -9,3 +9,4 @@ This module contains articles about core Kotlin I/O.
 - [Writing to a File in Kotlin](https://www.baeldung.com/kotlin/write-file)
 - [Writing InputStream to File in Kotlin](https://www.baeldung.com/kotlin/inputstream-to-file)
 - [Rename a File in Kotlin](https://www.baeldung.com/kotlin/file-rename)
+- [Delete the Contents of a File in Kotlin](https://www.baeldung.com/kotlin/delete-file-content)

core-kotlin-modules/core-kotlin-strings-5/README.md

@@ -7,4 +7,5 @@ This module contains articles about core Kotlin strings.
 - [Extract Numbers From a String in Kotlin](https://www.baeldung.com/kotlin/string-extract-numeric-value)
 - [Parse String With Thousands Separator in Kotlin](https://www.baeldung.com/kotlin/string-parse-thousands-separator)
 - [Guide to the HexFormat API](https://www.baeldung.com/kotlin/hexadecimal-string-parse)
+- [Convert Hex String to Byte Array in Kotlin](https://www.baeldung.com/kotlin/string-hex-byte-array-conversion)
 - - More articles: [[<-- prev]](../core-kotlin-strings-4)