Update README.md

Add IDBMirrorVFS to benchmarks link.

README.md

@@ -5,7 +5,7 @@ This is a WebAssembly build of SQLite with support for writing SQLite virtual fi
 
 IndexedDB and several Origin Private File System virtual file systems are among the examples provided as proof of concept. A table comparing the different VFS classes is [here](https://github.com/rhashimoto/wa-sqlite/tree/master/src/examples#vfs-comparison).
 
-[Try the demo](https://rhashimoto.github.io/wa-sqlite/demo/?build=asyncify&config=IDBBatchAtomicVFS&reset) or run [benchmarks](https://rhashimoto.github.io/wa-sqlite/demo/benchmarks/?config=asyncify,IDBBatchAtomicVFS;default,AccessHandlePoolVFS;default,OPFSCoopSyncVFS;asyncify,OPFSAdaptiveVFS;asyncify,OPFSPermutedVFS) with a modern desktop web browser. More information is available in the [FAQ](https://github.com/rhashimoto/wa-sqlite/issues?q=is%3Aissue+label%3Afaq+), [discussion forums](https://github.com/rhashimoto/wa-sqlite/discussions), and [API reference](https://rhashimoto.github.io/wa-sqlite/docs/).
+[Try the demo](https://rhashimoto.github.io/wa-sqlite/demo/?build=asyncify&config=IDBBatchAtomicVFS&reset) or run [benchmarks](https://rhashimoto.github.io/wa-sqlite/demo/benchmarks/?config=asyncify,IDBBatchAtomicVFS;asyncify,IDBMirrorVFS;default,AccessHandlePoolVFS;default,OPFSCoopSyncVFS;asyncify,OPFSAdaptiveVFS;asyncify,OPFSPermutedVFS) with a modern desktop web browser. More information is available in the [FAQ](https://github.com/rhashimoto/wa-sqlite/issues?q=is%3Aissue+label%3Afaq+), [discussion forums](https://github.com/rhashimoto/wa-sqlite/discussions), and [API reference](https://rhashimoto.github.io/wa-sqlite/docs/).
 
 ## Build
 The primary motivation for this project is to enable additions to SQLite with only Javascript. Most developers should be able to use the pre-built artifacts in