add a few basics

docs/src/docPages/configuration.md

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+# Configure tiptap
+
+In its basic version tiptap comes very raw. There is no menu, no buttons, no styling. That’s intended. See tiptap as your building blocks to build exactly the editor you’d like to have.
+
+Let’s start to add a few basic things to the configuration.
+
+<demo name="BasicConfiguration" />