Update README.md (#695)

Author: cahofmeyr

packages/adapter-sql-js/README.md

@@ -3,9 +3,9 @@
 A development package for PowerSync which uses [SQL.js](https://sql.js.org/#/) to provide a pure JavaScript SQLite implementation.
 This eliminates the need for native dependencies and enables seamless development with Expo Go and other JavaScript-only environments.
 
-This adapter is specifically intended to streamline the development workflow and will be much slower than DB adapters that use native dependencies.
+This adapter is specifically intended to streamline the **development workflow** and will be much slower than DB adapters that use native dependencies.
 Every write operation triggers a complete rewrite of the entire database file to persistent storage, not just the changed data.
-In addition to the perfomance overheads, this adapter doesn't provide any of the SQLite consistency guarantees - you may end up with missing data or a corrupted database file if the app is killed while writing to the database file.
+In addition to the performance overheads, this adapter doesn't provide any of the SQLite consistency guarantees - you may end up with missing data or a corrupted database file if the app is killed while writing to the database file.
 
 For production use, when building React Native apps we recommend switching to our [react-native-quick-sqlite](https://www.npmjs.com/package/@journeyapps/react-native-quick-sqlite) or [OP-SQLite](https://www.npmjs.com/package/@powersync/op-sqlite) adapters when making production builds as they give substantially better performance.