refactor: rename Recursion package

src/main/java/com/thealgorithms/Recursion/FibonacciSeries.java → src/main/java/com/thealgorithms/recursion/FibonacciSeries.java

@@ -1,4 +1,4 @@
-package com.thealgorithms.Recursion;
+package com.thealgorithms.recursion;
 
 /*
     The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones,

src/main/java/com/thealgorithms/Recursion/GenerateSubsets.java → src/main/java/com/thealgorithms/recursion/GenerateSubsets.java

@@ -1,4 +1,4 @@
-package com.thealgorithms.Recursion;
+package com.thealgorithms.recursion;
 
 // program to find power set of a string
 

src/test/java/com/thealgorithms/Recursion/FibonacciSeriesTest.java → src/test/java/com/thealgorithms/recursion/FibonacciSeriesTest.java

@@ -1,4 +1,4 @@
-package com.thealgorithms.Recursion;
+package com.thealgorithms.recursion;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 

src/test/java/com/thealgorithms/Recursion/GenerateSubsetsTest.java → src/test/java/com/thealgorithms/recursion/GenerateSubsetsTest.java

@@ -1,4 +1,4 @@
-package com.thealgorithms.Recursion;
+package com.thealgorithms.recursion;
 
 import static org.junit.jupiter.api.Assertions.assertArrayEquals;