docs: elaborate on duplicate setHeaders calls (#12886)

hyunbinseo · web-flow · commit bcb30cd2692f · 2024-10-28T10:26:53.000+08:00
diff --git a/documentation/docs/20-core-concepts/20-load.md b/documentation/docs/20-core-concepts/20-load.md
@@ -333,7 +333,7 @@ export async function load({ fetch, setHeaders }) {
 }
 ```
 
-Setting the same header multiple times (even in separate `load` functions) is an error — you can only set a given header once. You cannot add a `set-cookie` header with `setHeaders` — use `cookies.set(name, value, options)` instead.
+Setting the same header multiple times (even in separate `load` functions) is an error. You can only set a given header once using the `setHeaders` function. You cannot add a `set-cookie` header with `setHeaders` — use `cookies.set(name, value, options)` instead.
 
 ## Using parent data
 

Original file line number	Diff line number	Diff line change
`@@ -333,7 +333,7 @@ export async function load({ fetch, setHeaders }) {`
`333`	`333`	`}`
`334`	`334`	```
`335`	`335`
`336`		-Setting the same header multiple times (even in separate `load` functions) is an error — you can only set a given header once. You cannot add a `set-cookie` header with `setHeaders` — use `cookies.set(name, value, options)` instead.
	`336`	+Setting the same header multiple times (even in separate `load` functions) is an error. You can only set a given header once using the `setHeaders` function. You cannot add a `set-cookie` header with `setHeaders` — use `cookies.set(name, value, options)` instead.
`337`	`337`
`338`	`338`	`## Using parent data`
`339`	`339`