Update Binary Exponentiation algorithm file to comply with Javascript standard rules

Maths/test/BinaryExponentiationIterative.test.js

@@ -1,15 +1,15 @@
 import { exponent } from '../BinaryExponentiationIterative'
 
 describe('exponent', () => {
-    it('should return 1 when power is 0', () => {
-        expect(exponent(5, 0)).toBe(1)
-    })
+  it('should return 1 when power is 0', () => {
+    expect(exponent(5, 0)).toBe(1)
+  })
 
-    it('should return 0 when base is 0', () => {
-        expect(exponent(0, 7)).toBe(0)
-    })
+  it('should return 0 when base is 0', () => {
+    expect(exponent(0, 7)).toBe(0)
+  })
 
-    it('should return the value of a base raised to a power', () => {
-        expect(exponent(3, 5)).toBe(243)
-    })
-})
+  it('should return the value of a base raised to a power', () => {
+    expect(exponent(3, 5)).toBe(243)
+  })
+})