Fix typo in the third update

Author: MaxDesiatov

Content/posts/update-03-october-2020.md

@@ -119,7 +119,7 @@ support. This mirrors our existing [C++ implementation in the legacy
 driver](https://github.com/swiftwasm/swift/blob/swiftwasm/lib/Driver/WebAssemblyToolChains.cpp), and
 it's great that the new parts of the Swift compiler rewritten in Swift are going to support
 WebAssembly too. While Swift Driver isn't enabled in any toolchain by default, we're definitely
-going to enable it at some point in the future as soon Swift Driver seems to be stable enough for
+going to enable it at some point in the future as soon as it seems to be stable enough for
 us.
 
 ### SwiftPM and Swift Tools Support Core