clean up

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

docs/wiki/CL/overview.md

@@ -241,7 +241,7 @@ For example, if Slots 65 to 128 are empty, the Epoch 2 checkpoint defaults to th
 
 Validators cast two types of votes: **LMD GHOST** votes for blocks and **Casper FFG** votes for checkpoints. An **FFG** vote includes a source checkpoint from a previous epoch and a target checkpoint from the current epoch. For example, a validator in Epoch 1 might vote for a source checkpoint at the genesis block and a target checkpoint at Slot 64, repeating the same vote in Epoch 2. Only Validators assigned to a slot cast LMD GHOST votes, while all validators cast FFG votes for epoch checkpoints.
 
-#### Supermajority and Finality:
+#### Supermajority and Finality
 
 A supermajority, defined as ⅔ of the total validator balance, is required for a checkpoint to be justified. For instance, if validators have balances of 8 ETH, 8 ETH, and 32 ETH, a supermajority needs the vote of the 32 ETH validator. Once a checkpoint receives a supermajority, it becomes justified. If the subsequent epoch's checkpoint also achieves justification, the previous checkpoint is finalized, securing all preceding blocks. Typically, this process spans two epochs (12.8 minutes).