fix ant build

Author: celeduc

build.xml

@@ -39,7 +39,7 @@
       <manifest>
         <attribute name="Class-Path" value="${manifest_cp}"/>
         <attribute name="Implementation-Vendor" value="io.ipfs"/>
-        <attribute name="Implementation-Title" value="multiaddr"/>
+        <attribute name="Implementation-Title" value="api"/>
         <attribute name="Implementation-Version" value="1.0.0"/>
       </manifest>
     </jar>