docs: remove overlap note for prepare phase

Fixes blockstack/docs#1019

src/pages/understand-stacks/technical-specs.md

@@ -33,7 +33,7 @@ description: Summary of technical specifications of Stacks 2.0
 ## Stacking
 
 - Stacking works in 2 phases
-  1. Prepare phase: In this phase an "anchor block" is chosen. The qualifying set of addresses ("reward set") is determined based on the snapshot of the chain at the anchor block. Length of prepare phase is 100 blocks (overlaps with reward cycle of the previous phase).
+  1. Prepare phase: In this phase an "anchor block" is chosen. The qualifying set of addresses ("reward set") is determined based on the snapshot of the chain at the anchor block. Length of prepare phase is 100 blocks.
   2. Reward phase: In this phase miner BTC commitments are distributed amongst the reward set. Reward cycle length is 2000 BTC blocks (~2 weeks).
 - Two reward addresses / block, for a total of 4000 addresses every reward cycle. The addresses are chosen using a VRF (verifiable random function), so each node can deterministically arrive at the same reward addresses for a given block.
 - Stacking threshold: 0.025% of the participating amount of STX when participation is between 25% and 100% and when participation is below 25%, the threshold level is always 0.00625 of the liquid supply of STX.