Spec/consensus: references (links) to BFTTime updated

spec/consensus/proposer-based-timestamp/README.md

@@ -146,7 +146,7 @@ The full solution is detailed and formalized in the [Protocol Specification][alg
 
 [proposertla]: ./tla/TendermintPBT_001_draft.tla
 
-[bfttime]: https://github.com/tendermint/tendermint/blob/master/spec/consensus/bft-time.md
+[bfttime]: ./bft-time.md
 [arXiv]: https://arxiv.org/pdf/1807.04938.pdf
 
 [issue353]: https://github.com/tendermint/spec/issues/353

spec/consensus/proposer-based-timestamp/pbts-algorithm_002_draft.md

@@ -123,5 +123,5 @@ Back to [main document][main].
 
 [sysmodel]: ./pbts-sysmodel_002_draft.md
 
-[bfttime]: https://github.com/tendermint/tendermint/blob/master/spec/consensus/bft-time.md
+[bfttime]: ./bft-time.md
 [arXiv]: https://arxiv.org/pdf/1807.04938.pdf

spec/consensus/proposer-based-timestamp/v1/pbts_001_draft.md

@@ -261,7 +261,7 @@ This specification describes the changes needed to be done to the Tendermint con
 
 [proposertla]: ../tla/TendermintPBT_001_draft.tla
 
-[bfttime]: ../../bft-time.md
+[bfttime]: ../bft-time.md
 [tlatender]: https://github.com/tendermint/spec/blob/master/rust-spec/tendermint-accountability/README.md
 [lcspec]: ../../light-client/
 [arXiv]: https://arxiv.org/abs/1807.04938

spec/consensus/readme.md

@@ -14,7 +14,7 @@ Specification of the Tendermint consensus protocol.
 - [Consensus Paper](./consensus-paper) - Latex paper on
   [arxiv](https://arxiv.org/abs/1807.04938) describing the
   core Tendermint consensus state machine with proofs of safety and termination.
-- [BFT Time](./bft-time.md) - How the timestamp in a Tendermint
+- [Block Time](./time.md) - How the Time field in a Tendermint
   block header is computed in a Byzantine Fault Tolerant manner
 - [Creating Proposal](./creating-proposal.md) - How a proposer
   creates a block proposal for consensus