Merge pull request serilog#33 from xakep139/patch-1

Fix typo in README.md [Skip CI]

Author: nblumhardt

README.md

@@ -48,6 +48,6 @@ Multiple processes can concurrently write to the same log file if the `shared` p
 
 By default, the file sink will flush each event written through it to disk. To improve write performance, specifying `buffered: true` will permit the underlying stream to buffer writes.
 
-The [Serilog.Sinks.Async](https://github.com/serilog/serilog-sinks-async) package can be used to wrap the file sink and perform all disk accss on a background worker thread.
+The [Serilog.Sinks.Async](https://github.com/serilog/serilog-sinks-async) package can be used to wrap the file sink and perform all disk access on a background worker thread.
 
 _Copyright © 2016 Serilog Contributors - Provided under the [Apache License, Version 2.0](http://apache.org/licenses/LICENSE-2.0.html)._