Update src/content/docs/workers/wrangler/migration/update-v3-to-v4.mdx

Co-authored-by: Somhairle MacLeòid <[email protected]>

Author: korinne

src/content/docs/workers/wrangler/migration/update-v3-to-v4.mdx

@@ -31,7 +31,7 @@ Wrangler tests no longer run on v16, and users still on this version may encount
 
 ### esbuild Version Upgrade
 
-Wrangler upgraded esbuild from **v0.17.19** to **v0.24**, bringing improvements (such as the ability to use the `using` keyword with RPC) and changes to bundling behavior: 
+Wrangler v4 upgraded esbuild from **v0.17.19** to **v0.24**, bringing improvements (such as the ability to use the `using` keyword with RPC) and changes to bundling behavior: 
 * **Dynamic imports:** Wildcard imports (for example, `import('./data/' + kind + '.json')`) now automatically include all matching files in the bundle.