Qute docs: clarify template record not annotated with `@CheckedTemplate` #1746

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CI Sanity Check	31s
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Maven Tests - JDK ${{ matrix.java.name }}	1s
JVM Tests - JDK ${{ matrix.java.name }}	1s
Gradle Tests - JDK ${{ matrix.java.name }}	1s
Kubernetes Tests - JDK ${{ matrix.java.name }}	1s
Quickstarts Compilation - JDK ${{ matrix.java.name }}	1s
Devtools Tests - JDK ${{ matrix.java.name }}	1s
MicroProfile TCKs Tests	1s
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Native Tests - ${{ matrix.category }}	1s
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