docs: new explanation

README.md

@@ -140,7 +140,7 @@ function App() {
 }
 ```
 
-Notice how when the `count` is updated, Million.js will directly update the DOM node. Million.js turns React reconciliation from `O(n^3)` (exponential time) to `O(1)` (constant time).
+Notice how when the `count` is updated, Million.js will directly update the DOM node. Million.js turns React reconciliation from `O(n^3)` (cubic time) to `O(1)` (constant time).
 
 > How fast is it? [**→ View the benchmarks**](https://krausest.github.io/js-framework-benchmark/current.html)
 

website/pages/docs/index.mdx

@@ -101,7 +101,7 @@ function App() {
 }
 ```
 
-Notice how when the `count` is updated, Million.js will directly update the DOM node. Million.js turns React reconciliation from `O(n^3)` (exponential time) to `O(1)` (constant time).
+Notice how when the `count` is updated, Million.js will directly update the DOM node. Million.js turns React reconciliation from `O(n^3)` (cubic time) to `O(1)` (constant time).
 
 > How fast is it? [**→ View the benchmarks**](https://krausest.github.io/js-framework-benchmark/current.html)