docs: Update v0.34.x to prepare for v0.37 (#9244)

* Ignore generated/copied RPC docs

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* Sync vuepress config with main

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* Sync docs package-lock.json with main

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* Sync docs redirects with main

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* Sync docs versions with main

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* Update OpenAPI version to v0.34

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* Sync DOCS_README with main

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* Update all v0.34.x docs references from master to main

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* Update v0.34 OpenAPI references from master to main

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* Update repo doc links from master to main

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* Update code comment references from master to main

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* Update repo root doc links from master to main

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* Update repo root doc links for docs.tendermint.com from master to main

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* Build v0.34.x as "latest"

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* Explicitly mark v0.34 docs as latest in version selector

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* Add nav link to main and clearly mark as unstable

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* Direct all docs.tendermint.com links to v0.34 on v0.34.x

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* Update all relevant links on v0.34.x branch to be v0.34-specific

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* Update changelog refs to docs.tendermint.com

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* Update remaining GH master link to main

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* Sync docs build and nav config with main

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* Migrate spec links to GitHub repo from docs site

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Signed-off-by: Thane Thomson <connect@thanethomson.com>

docs/tendermint-core/using-tendermint.md

@@ -39,7 +39,7 @@ tendermint testnet --help
 
 The `genesis.json` file in `$TMHOME/config/` defines the initial
 TendermintCore state upon genesis of the blockchain ([see
-definition](https://github.com/tendermint/tendermint/blob/master/types/genesis.go)).
+definition](https://github.com/tendermint/tendermint/blob/v0.34.x/types/genesis.go)).
 
 #### Fields
 
@@ -49,7 +49,7 @@ definition](https://github.com/tendermint/tendermint/blob/master/types/genesis.g
   chain IDs, you will have a bad time. The ChainID must be less than 50 symbols.
 - `initial_height`: Height at which Tendermint should begin at. If a blockchain is conducting a network upgrade, 
     starting from the stopped height brings uniqueness to previous heights. 
-- `consensus_params` [spec](https://github.com/tendermint/spec/blob/master/spec/core/state.md#consensusparams)
+- `consensus_params` [spec](https://github.com/tendermint/tendermint/blob/v0.34.x/spec/core/data_structures.md#consensusparams)
     - `block`
         - `max_bytes`: Max block size, in bytes.
         - `max_gas`: Max gas per block.
@@ -183,7 +183,7 @@ endpoints. Some take no arguments (like `/status`), while others specify
 the argument name and use `_` as a placeholder.
 
 
-> TIP: Find the RPC Documentation [here](https://docs.tendermint.com/master/rpc/)
+> TIP: Find the RPC Documentation [here](https://docs.tendermint.com/v0.34/rpc/)
 
 ### Formatting