HADOOP-16390. escape javadoc in S3AUtils public methods

Signed-off-by: Takanobu Asanuma <tasanuma@apache.org>

hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AUtils.java

@@ -963,7 +963,7 @@ public final class S3AUtils {
   }
 
   /**
-   * Get a integer option >= the minimum allowed value.
+   * Get a integer option >= the minimum allowed value.
    * @param conf configuration
    * @param key key to look up
    * @param defVal default value
@@ -981,7 +981,7 @@ public final class S3AUtils {
   }
 
   /**
-   * Get a long option >= the minimum allowed value.
+   * Get a long option >= the minimum allowed value.
    * @param conf configuration
    * @param key key to look up
    * @param defVal default value