Resolved the checkstyle violations in the testcase classes

Author: pushkar

src/test/java/com/thealgorithms/sorts/AdaptiveMergeSortTest.java

@@ -107,7 +107,9 @@ public int compareTo(Person o) {
 
         @Override
         public boolean equals(Object o) {
-            if (!(o instanceof Person)) return false;
+            if (!(o instanceof Person)) {
+                return false;
+            }
             Person p = (Person) o;
             return this.name.equals(p.name) && this.age == p.age;
         }

src/test/java/com/thealgorithms/sorts/BogoSortTest.java

@@ -116,7 +116,9 @@ public int compareTo(Person o) {
 
         @Override
         public boolean equals(Object o) {
-            if (!(o instanceof Person)) return false;
+            if (!(o instanceof Person)) {
+                return false;
+            }
             Person p = (Person) o;
             return this.name.equals(p.name) && this.age == p.age;
         }

src/test/java/com/thealgorithms/sorts/BubbleSortTest.java

@@ -144,7 +144,9 @@ public int compareTo(Person o) {
 
         @Override
         public boolean equals(Object o) {
-            if (!(o instanceof Person)) return false;
+            if (!(o instanceof Person)) {
+                return false;
+            }
             Person p = (Person) o;
             return this.name.equals(p.name) && this.age == p.age;
         }

src/test/java/com/thealgorithms/sorts/GnomeSortTest.java

@@ -137,7 +137,9 @@ public int compareTo(Person o) {
 
         @Override
         public boolean equals(Object o) {
-            if (!(o instanceof Person)) return false;
+            if (!(o instanceof Person)) {
+                return false;
+            }
             Person p = (Person) o;
             return this.name.equals(p.name) && this.age == p.age;
         }

src/test/java/com/thealgorithms/sorts/InsertionSortTest.java

@@ -6,7 +6,6 @@
 import java.util.Objects;
 import java.util.function.Function;
 import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
 class InsertionSortTest {
@@ -165,7 +164,9 @@ public int compareTo(Person o) {
 
         @Override
         public boolean equals(Object o) {
-            if (!(o instanceof Person)) return false;
+            if (!(o instanceof Person)) {
+                return false;
+            }
             Person p = (Person) o;
             return this.name.equals(p.name) && this.age == p.age;
         }

src/test/java/com/thealgorithms/sorts/SlowSortTest.java

@@ -129,7 +129,9 @@ public int compareTo(Person o) {
 
         @Override
         public boolean equals(Object o) {
-            if (!(o instanceof Person)) return false;
+            if (!(o instanceof Person)) {
+                return false;
+            }
             Person p = (Person) o;
             return this.name.equals(p.name) && this.age == p.age;
         }