Fix broken /docs/spec links (#4376)

docs/architecture/adr-044-lite-client-with-weak-subjectivity.md

@@ -84,7 +84,7 @@ The linear verification algorithm requires downloading all headers
 between the `TrustHeight` and the `LatestHeight`. The lite client downloads the
 full header for the provided `TrustHeight` and then proceeds to download `N+1`
 headers and applies the [Tendermint validation
-rules](https://github.com/tendermint/tendermint/blob/master/docs/spec/blockchain/blockchain.md#validation)
+rules](https://docs.tendermint.com/master/spec/blockchain/blockchain.html#validation)
 to each block.
 
 ### Bisecting Verification
@@ -119,7 +119,7 @@ network usage.
 ---
 
 Check out the formal specification
-[here](https://github.com/tendermint/tendermint/blob/master/docs/spec/consensus/light-client.md).
+[here](https://docs.tendermint.com/master/spec/consensus/light-client.html).
 
 ## Status
 

docs/architecture/adr-045-abci-evidence.md

@@ -18,7 +18,7 @@ graceful here, but that's for another day.
 
 It's possible to fool lite clients without there being a fork on the
 main chain - so called Fork-Lite. See the
-[fork accountability](https://github.com/tendermint/tendermint/blob/master/docs/spec/consensus/fork-accountability.md)
+[fork accountability](https://docs.tendermint.com/master/spec/consensus/fork-accountability.html)
 document for more details. For a sequential lite client, this can happen via
 equivocation or amnesia attacks. For a skipping lite client this can also happen
 via lunatic validator attacks. There must be some way for applications to punish

docs/interviews/tendermint-bft.md

@@ -247,4 +247,4 @@ keep the list of new nodes it discovers, and when you need to establish
 connection to a peer, you'll look to address book and get some addresses from
 there. There's categorization/ranking of nodes there.
 
-[1]: https://github.com/tendermint/tendermint/blob/master/docs/spec/reactors/consensus/proposer-selection.md
+[1]: https://docs.tendermint.com/master/spec/reactors/consensus/proposer-selection.html

docs/tendermint-core/secure-p2p.md

@@ -67,7 +67,7 @@ Authenticated encryption is enabled by default.
 
 ## Specification
 
-The full p2p specification can be found [here](https://github.com/tendermint/tendermint/tree/master/docs/spec/p2p).
+The full p2p specification can be found [here](https://docs.tendermint.com/master/spec/p2p/).
 
 ## Additional Reading