Update 02_1_Creating_Self_Attestations.md

Author: shannona

docs/02_1_Creating_Self_Attestations.md

@@ -602,7 +602,7 @@ BRadvoc8 is now an identity with an initial claim about skills, but that's opene
 
 A complete working script implementing this tutorial is available at `../tests/03-creating-self-attestations.sh`.
 
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 ## Appendix I: Key Terminology