Fix typo in default variable.

Author: jeffbr13

defaults/main.yml

@@ -2,6 +2,6 @@
 ipfs_dist_url: https://dist.ipfs.io
 ipfs_version: v0.4.11
 ipfs_arch: amd64
-ipfs_http_api_listen_multiaaddress: /ip4/127.0.0.1/tcp/5001
+ipfs_http_api_listen_multiaddress: /ip4/127.0.0.1/tcp/5001
 ipfs_http_gateway_listen_multiaddress: /ip4/127.0.0.1/tcp/8080
 ipfs_storage_max: 10GB