all: update repo to use the new error handling syntax (#8950)

doc/docs.md

@@ -1321,7 +1321,7 @@ import os
 
 fn read_log() {
 	mut ok := false
-	mut f := os.open('log.txt') or { panic(err) }
+	mut f := os.open('log.txt') or { panic(err.msg) }
 	defer {
 		f.close()
 	}
@@ -2401,7 +2401,7 @@ any further.
 The body of `f` is essentially a condensed version of:
 
 ```v ignore
-    resp := http.get(url) or { return error(err) }
+    resp := http.get(url) or { return err }
     return resp.text
 ```
 
@@ -2418,7 +2418,7 @@ to break from the current block.
 Note that `break` and `continue` can only be used inside a `for` loop.
 
 V does not have a way to forcibly "unwrap" an optional (as other languages do,
-for instance Rust's `unwrap()` or Swift's `!`). To do this, use `or { panic(err) }` instead.
+for instance Rust's `unwrap()` or Swift's `!`). To do this, use `or { panic(err.msg) }` instead.
 
 ---
 The third method is to provide a default value at the end of the `or` block.
@@ -3495,7 +3495,7 @@ Full list of builtin options:
 module main
 fn main() {
 	embedded_file := $embed_file('v.png')
-	mut fw := os.create('exported.png') or { panic(err) }
+	mut fw := os.create('exported.png') or { panic(err.msg) }
 	fw.write_bytes(embedded_file.data(), embedded_file.len)
 	fw.close()
 }
@@ -3658,7 +3658,7 @@ eprintln('file: ' + @FILE + ' | line: ' + @LINE + ' | fn: ' + @MOD + '.' + @FN)
 Another example, is if you want to embed the version/name from v.mod *inside* your executable:
 ```v ignore
 import v.vmod
-vm := vmod.decode( @VMOD_FILE ) or { panic(err) }
+vm := vmod.decode( @VMOD_FILE ) or { panic(err.msg) }
 eprintln('$vm.name $vm.version\n $vm.description')
 ```