Fixed typos in Apache CouchDB

Apache CouchDB is incorrectly referred to as CounchDB
twice on the website.

Closes #13
diff --git a/site/index.md b/site/index.md
index 69769ba..c5fd561 100644
--- a/site/index.md
+++ b/site/index.md
@@ -33,10 +33,10 @@
 
 ## Apache Spark extensions
 
- - Spark data source for Apache CounchDB/Cloudant ![](assets/themes/apache-clean/img/new-black.png){:height="36px" width="36px"}
+ - Spark data source for Apache CouchDB/Cloudant ![](assets/themes/apache-clean/img/new-black.png){:height="36px" width="36px"}
  - Spark Structured Streaming data source for Akka ![](assets/themes/apache-clean/img/new-black.png){:height="36px" width="36px"}
  - Spark Structured Streaming data source for MQTT
- - Spark DStream connector for Apache CounchDB/Cloudant ![](assets/themes/apache-clean/img/new-black.png){:height="36px" width="36px"}
+ - Spark DStream connector for Apache CouchDB/Cloudant ![](assets/themes/apache-clean/img/new-black.png){:height="36px" width="36px"}
  - Spark DStream connector for Akka
  - Spark DStream connector for Google Cloud Pub/Sub ![](assets/themes/apache-clean/img/new-black.png){:height="36px" width="36px"}
  - Spark DStream connector for MQTT