message: docs: fix l2-output link
diff: @@ -694,7 +694,7 @@ cf. [L1 Attributes Predeployed Contract Specification](deposits.md#l1-attributes
  ## L2 Output Root
  -[l2-output]: glossary.md#l2-output
  +[l2-output]: glossary.md#l2-output-root
  A 32 byte value which serves as a commitment to the current state of the L2 chain.
  