docs: fix variable name and remove extra parens (#264)

Loving the library. Just some small typos I noticed while reading the
docs.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Documentation**
- Refined error handling examples to improve clarity in illustrating
error construction.
- Updated middleware integration instructions to reflect current setup
conventions without altering underlying functionality.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: mutewinter

apps/content/docs/error-handling.md

@@ -27,10 +27,10 @@ In the traditional approach you may throw any JavaScript error. However, using t
 
 ```ts
 const rateLimit = os.middleware(async ({ next }) => {
-  throw new ORPCError('RATE_LIMITED', ({
+  throw new ORPCError('RATE_LIMITED', {
     message: 'You are being rate limited',
     data: { retryAfter: 60 }
-  }))
+  })
   return next()
 })
 
@@ -109,10 +109,10 @@ const rateLimit = base.middleware(async ({ next, errors }) => {
     data: { retryAfter: 60 }
   })
   // OR --- both are equivalent
-  throw new ORPCError('RATE_LIMITED', ({
+  throw new ORPCError('RATE_LIMITED', {
     message: 'You are being rate limited',
     data: { retryAfter: 60 }
-  }))
+  })
   return next()
 })
 

apps/content/docs/integrations/hono.md

@@ -17,7 +17,7 @@ const app = new Hono()
 
 const handler = new RPCHandler(router)
 
-app.use('/rpc/*', createMiddleware(rpcHandler, {
+app.use('/rpc/*', createMiddleware(handler, {
   prefix: '/rpc',
   context: async (c) => {
     return {} // Provide initial context if needed