change readme

Author: guoshijiang

README.md

@@ -4,7 +4,7 @@ parent:
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-  <h1> l2fp-contracts</h1>
+  <h1> manta-fp-contracts</h1>
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@@ -21,7 +21,7 @@ parent:
 
 ## 1.Finality Provider Contracts for layer2
 
-l2fp-contracts is a suite of contracts designed for managing nodes and verifying BLS signatures within a Layer 2 fast finality network. It aggregates signature verifications from Finality Providers in the Babylon and Symbiotic networks to ensure the network's finality.
+manta-fp-contracts is a suite of contracts designed for managing nodes and verifying BLS signatures within a Layer 2 fast finality network. It aggregates signature verifications from Finality Providers in the Babylon and Symbiotic networks to ensure the network's finality.
 
 ## 2.Usage