Update index.md (docker#3102)

registry/storage-drivers/index.md

@@ -14,7 +14,7 @@ This storage driver package comes bundled with several drivers:
 
 - [inmemory](inmemory.md): A temporary storage driver using a local inmemory map. This exists solely for reference and testing.
 - [filesystem](filesystem.md): A local storage driver configured to use a directory tree in the local filesystem.
-- [s3](s3.md): A driver storing objects in an Amazon Simple Storage Solution (S3) bucket.
+- [s3](s3.md): A driver storing objects in an Amazon Simple Storage Service (S3) bucket.
 - [azure](azure.md): A driver storing objects in [Microsoft Azure Blob Storage](http://azure.microsoft.com/en-us/services/storage/).
 - [swift](swift.md): A driver storing objects in [Openstack Swift](http://docs.openstack.org/developer/swift/).
 - [oss](oss.md): A driver storing objects in [Aliyun OSS](http://www.aliyun.com/product/oss).
@@ -55,4 +55,4 @@ Storage drivers should call `factory.Register` with their driver name in an `ini
 Storage driver test suites are provided in
 `storagedriver/testsuites/testsuites.go` and may be used for any storage
 driver written in Go. Tests can be registered using the `RegisterSuite`
-function, which run the same set of tests for any registered drivers.
+function, which run the same set of tests for any registered drivers.