Update mini-racer.md

content/post/mini-racer.md

@@ -201,7 +201,7 @@ But building V8 is hard! Fun challenges in building V8:
 1. **V8 is enormous and building it is slow:** V8 contains _or dynamically
    downloads_ 6.6 GB of _source_! (Okay, not all "source", actually: this
    includes some vendored copies of operating system roots, like `/usr` from
-   flavors of Debian.) There are about 2.4k build systems, which include
+   flavors of Debian.) There are about 2.4k build steps, which include
    building tons of code generated by
    [the Torque compiler](https://v8.dev/docs/torque). It takes over an hour to
    build from scratch on a