Fix typo in api_struct_info.json

Breaking the Dawn->Chromium roll

Bug: none
Change-Id: Ic016b8bbdc817696bd31192a48dfd2022adcff8f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/73060
Commit-Queue: Austin Eng <enga@chromium.org>
Auto-Submit: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
diff --git a/generator/templates/api_struct_info.json b/generator/templates/api_struct_info.json
index ff3a35c..04e56cf 100644
--- a/generator/templates/api_struct_info.json
+++ b/generator/templates/api_struct_info.json
@@ -23,7 +23,7 @@
         "file": "{api}/{api}.h",
         "defines": [],
         "structs": {
-            "{{metatdata.c_prefix}}ChainedStruct": [
+            "{{metadata.c_prefix}}ChainedStruct": [
                 "next",
                 "sType"
             ],