Fix malformed Javadoc comments

Author: garydgregory

src/main/java/org/apache/commons/dbcp2/BasicDataSource.java

@@ -466,7 +466,7 @@ private void closeConnectionPool() {
      * with the specified {@link ClassLoader}.</li>
      * <li>If {code driverClassName} is specified and the previous attempt fails, the class is loaded using the
      * context class loader of the current thread.</li>
-     * <li>If a driver still isn't loaded one is loaded via the {@link DriverManager} using the specified {code connectionString}.
+     * <li>If a driver still isn't loaded one is loaded via the {@link DriverManager} using the specified {code connectionString}.</li>
      * </ol>
      * <p>
      * This method exists so subclasses can replace the implementation class.