Small name refactoring, fix adjusting parameters

Author: carlosdelest

server/src/main/java/org/elasticsearch/search/vectors/ESKnnByteVectorQuery.java

@@ -39,4 +39,8 @@ public void profile(QueryProfiler queryProfiler) {
     public Integer kParam() {
         return kParam;
     }
+
+    public Integer kParam() {
+        return kParam;
+    }
 }

server/src/main/java/org/elasticsearch/search/vectors/ESKnnFloatVectorQuery.java

@@ -39,4 +39,8 @@ public void profile(QueryProfiler queryProfiler) {
     public Integer kParam() {
         return kParam;
     }
+
+    public Integer kParam() {
+        return kParam;
+    }
 }