fix

Author: Lukas Molzberger

src/main/java/org/aika/training/MetaSynapse.java

@@ -64,7 +64,7 @@ public static class Builder extends Synapse.Builder {
         public double metaBias;
         public boolean metaRelativeRid;
 
-        public Synapse.Builder setMetaWeight(double metaWeight) {
+        public Builder setMetaWeight(double metaWeight) {
             this.metaWeight = metaWeight;
             return this;
         }