fix build warnings

Author: Alan-95-hub

src/test/java/org/cactoos/func/FlattenedTest.java

@@ -10,10 +10,10 @@
 import org.llorllale.cactoos.matchers.IsApplicable;
 
 /**
-* Tests for {@link Flattened}.
-*
-* @since 0.49
-*/
+ * Tests for {@link Flattened}.
+ *
+ * @since 0.49
+ */
 @SuppressWarnings("PMD.JUnitTestsShouldIncludeAssert")
 final class FlattenedTest {
     @Test

src/test/java/org/cactoos/package-info.java

@@ -10,7 +10,6 @@
  *  Assertion from cactoos-matchers. Keep PR short and limit the changes to
  *  single package. Update this puzzle for the next package.
  *  After all packages are done, add MatcherAssert to forbidden-apis.txt
- *
  * @since 0.9
  */
 package org.cactoos;

src/test/java/org/cactoos/scalar/FlattenedTest.java

@@ -13,10 +13,10 @@
 import org.llorllale.cactoos.matchers.IsText;
 
 /**
-* Tests for {@link Flattened}.
-*
-* @since 0.49
-*/
+ * Tests for {@link Flattened}.
+ *
+ * @since 0.49
+ */
 final class FlattenedTest {
     @Test
     void flattens() {

src/test/java/org/cactoos/text/FlattenedTest.java

@@ -14,10 +14,10 @@
 import org.llorllale.cactoos.matchers.IsText;
 
 /**
-* Tests for {@link Flattened}.
-*
-* @since 0.49
-*/
+ * Tests for {@link Flattened}.
+ *
+ * @since 0.49
+ */
 final class FlattenedTest {
     @Test
     void flattens() {