tpl/tplimpl: Move README one level up

tpl/tplimpl/embedded/README.md

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+
+
+## Build Templates
+
+If you add or modify any template in the tmplates folder, you also need to run `mage generate` to get the Go code in synch.

tpl/tplimpl/embedded/templates/README.md

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-
-
-## Build Templates
-
-If you add or modify any template in this folder, you also need to run `mage generate` to get the Go code in synch.