Apply suggestions from code review

Co-authored-by: Marcono1234 <[email protected]>

Author: bdemers

impl/src/main/java/io/jsonwebtoken/impl/JwtDeserializer.java

@@ -24,7 +24,7 @@
 import java.nio.charset.StandardCharsets;
 
 /**
- * A {@link Deserializer} implementation that wraps another Deserializer implementation to adds common JWT related
+ * A {@link Deserializer} implementation that wraps another Deserializer implementation to add common JWT related
  * error handling.
  * @param <T> type of object to deserialize.
  * @since 0.11.3

impl/src/test/groovy/io/jsonwebtoken/impl/JwtDeserializerTest.groovy

@@ -32,7 +32,7 @@ import static org.junit.Assert.assertEquals
 class JwtDeserializerTest {
 
     /**
-     * It's common for JSON parser's to throw a StackOverflowError when body is deeply nested. Since it's common
+     * It's common for JSON parsers to throw a StackOverflowError when body is deeply nested. Since it's common
      * across multiple parsers, JJWT handles the exception when parsing.
      */
     @Test
@@ -54,7 +54,7 @@ class JwtDeserializerTest {
     }
 
     /**
-     * Check that a DeserializationException, is wrapped and rethrown as a MalformedJwtException with a developer friendly message.
+     * Check that a DeserializationException is wrapped and rethrown as a MalformedJwtException with a developer friendly message.
      */
     @Test
     void testDeserializationExceptionMessage() {