chore(docs): update History Change Support page for google-tagmanager (…

…#13277)

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## Description

Think it's meant to link directly to the history change page right? If I misinterpreted that link than feel free to ignore this PR.

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packages/gatsby-plugin-google-tagmanager/README.md

@@ -31,4 +31,4 @@ plugins: [
 
 #### Note
 
-Out of the box this plugin will simply load Google Tag Manager on the initial page/app load. It's up to you to fire tags based on changes in your app. To automatically track page changes, in GA for instance, you can configure your tags in GTM to trigger on [History Change](https://support.google.com/tagmanager/topic/7679384?hl=en&rd=1#HistoryChange).
+Out of the box this plugin will simply load Google Tag Manager on the initial page/app load. It's up to you to fire tags based on changes in your app. To automatically track page changes, in GA for instance, you can configure your tags in GTM to trigger on [History Change](https://support.google.com/tagmanager/answer/7679322?hl=en&ref_topic=7679108).