Update contracts/ckb-bitcoin-spv-type-lock/README.md

Co-authored-by: Flouse <[email protected]>

Author: EthanYuan

contracts/ckb-bitcoin-spv-type-lock/README.md

@@ -32,7 +32,7 @@ A Bitcoin SPV instance contains two types of cells: **SPV info cell** and **SPV
 
 - **SPV Info Cell**
 
-  The SPV info cell stores the basic information of the current Bitcoin SPV instance, such as `tip_ client_cell_id`. Each Bitcoin SPV
+  The SPV info cell stores the basic information of the current Bitcoin SPV instance, such as `tip_client_id`. Each Bitcoin SPV
   instance contains only one SPV info cell.
 
   ```yaml