fix typos in method and docs.

Original Pull Request #2640
Closes #2638

Author: sothawo

src/main/java/org/springframework/data/elasticsearch/core/query/BaseQueryBuilder.java

@@ -440,7 +440,7 @@ public SELF withReactiveBatchSize(@Nullable Integer reactiveBatchSize) {
 		return self();
 	}
 
-	public SELF witAllowNoIndices(@Nullable Boolean allowNoIndices) {
+	public SELF withAllowNoIndices(@Nullable Boolean allowNoIndices) {
 		this.allowNoIndices = allowNoIndices;
 		return self();
 	}

src/test/java/org/springframework/data/elasticsearch/utils/IndexNameProvider.java

@@ -16,7 +16,7 @@
 package org.springframework.data.elasticsearch.utils;
 
 /**
- * Class providing an index name witInCo
+ * Class providing an index name with a prefix and a index number
  *
  * @author Peter-Josef Meisch
  */