Update GO_VERSION to 1.19 and fix typo (google#1155)

Author: deining

assets/json/offline-search-index.json

@@ -1,7 +1,7 @@
 {{- $.Scratch.Add "offline-search-index" slice -}}
 {{- range where .Site.AllPages ".Params.exclude_search" "!=" true -}}
 {{- /* We have to apply `htmlUnescape` again after `truncate` because `truncate` applies `html.EscapeString` if the argument is not HTML. */ -}}
-{{- /* Indvidual taxonomies can be added in the next line by add '"taxonomy-name" (.Params.taxonomy-name | default "")' to the dict (as seen for categories and tags). */ -}}
+{{- /* Individual taxonomies can be added in the next line by add '"taxonomy-name" (.Params.taxonomy-name | default "")' to the dict (as seen for categories and tags). */ -}}
 {{- $.Scratch.Add
     "offline-search-index"
     (dict

netlify.toml

@@ -6,7 +6,7 @@ publish = "userguide/public"
 command = "npm run docs-install && npm run build:preview"
 
 [build.environment]
-GO_VERSION = "1.18.4"
+GO_VERSION = "1.19"
 HUGO_THEME = "repo"
 
 [context.production]