Fix

Author: Hardvan

src/test/java/com/thealgorithms/conversions/IPv6ConverterTest.java

@@ -35,7 +35,7 @@ public void testIpv6ToIpv4InvalidFormat() {
     }
 
     @Test
-    public void testIpv4ToIpv6_EmptyString() {
+    public void testIpv4ToIpv6EmptyString() {
         String emptyIpv4 = getEmptyString();
         assertThrows(UnknownHostException.class, () -> { IPv6Converter.ipv4ToIpv6(emptyIpv4); });
     }