Merge pull request #839 from rcalago/master

Update on README.md

Author: lor6

core-kotlin-modules/core-kotlin-collections-map/README.md

@@ -8,3 +8,4 @@
 - [Creating a Map from Two Arrays in Kotlin](https://www.baeldung.com/kotlin/map-from-two-arrays)
 - [Converting a List of Maps to a Map Grouped by Key in Kotlin](https://www.baeldung.com/kotlin/map-grouping)
 - [Guide to Merging Two Maps in Kotlin](https://www.baeldung.com/kotlin/maps-merge-entries)
+- [In Place Modification of Map Entry in Kotlin](https://www.baeldung.com/kotlin/map-modify-in-place)

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

@@ -13,4 +13,5 @@ This module contains articles about core Kotlin numbers.
 - [Rounding Numbers in Kotlin](https://www.baeldung.com/kotlin/round-numbers)
 - [Get a Random Number in Kotlin](https://www.baeldung.com/kotlin/random-number)
 - [Unsigned Integers in Kotlin](https://www.baeldung.com/kotlin/unsigned-integers)
-- More articles: [[next -->]](../core-kotlin-numbers-2)
+- [Calculate Percentage in Kotlin](https://www.baeldung.com/kotlin/percentage-computation)
+- More articles: [[next -->]](../core-kotlin-numbers-2)

core-kotlin-modules/core-kotlin-strings-4/README.md

@@ -13,3 +13,4 @@ This module contains articles about core Kotlin strings.
 - [Sorting a String Alphabetically in Kotlin](https://www.baeldung.com/kotlin/string-sort)
 - [Kotlin Equivalent of Java’s equalsIgnoreCase()](https://www.baeldung.com/kotlin/java-equalsignorecase-equivalent)
 - [Convert String to Char in Kotlin](https://www.baeldung.com/kotlin/string-char-conversion)
+- [Java Boolean.valueOf() Equivalent in Kotlin](https://www.baeldung.com/kotlin/boolean-valueof-equivalent)

kotlin-ktor/README.md

@@ -6,3 +6,4 @@ This module contains articles about Kotlin Libraries.
 - [An Introduction to Running GraphQL in Kotlin and Ktor](https://www.baeldung.com/kotlin/graphql-ktor)
 - [Creating a Web Application With Ktor and Thymeleaf](https://www.baeldung.com/kotlin/ktor-thymeleaf-web-application)
 - [A Look at the Ktor Client](https://www.baeldung.com/kotlin/ktor-client)
+- [Testing Ktor Controllers](https://www.baeldung.com/kotlin/ktor-test-controllers)