Fix javadoc errors

See #396.

Author: dr0i

config/checkstyle/checkstyle.xml

@@ -68,6 +68,7 @@
         <module name="InterfaceIsType"/>
         <module name="InterfaceTypeParameterName"/>
         <module name="JavaNCSS"/>
+        <module name="JavadocMethod"/>
         <module name="JavadocType"/>
         <module name="LambdaParameterName"/>
         <module name="LeftCurly"/>

metafacture-biblio/src/main/java/org/metafacture/biblio/marc21/MarcXmlEncoder.java

@@ -242,12 +242,18 @@ private void writeFooter() {
         writeRaw(ROOT_CLOSE);
     }
 
-    /** Writes a unescaped sequence */
+    /** Writes a unescaped sequence
+    *   @param str
+    *             the unescaped sequence to be written
+    */
     private void writeRaw(final String str) {
         builder.append(str);
     }
 
-    /** Writes a escaped sequence */
+    /** Writes a escaped sequence
+    *   @param str
+    *             the unescaped sequence to be written
+    */
     private void writeEscaped(final String str) {
         builder.append(XmlUtil.escape(str, false));
     }