update language (backport celestiaorg#1263) (celestiaorg#1269)

* update language (celestiaorg#1263)

Using "a validator should" instead of 'we'

(cherry picked from commit 3d1c36d1ecb27a8f9791fe661d4e2f15224a3796)

# Conflicts:
#	docs/core/configuration.md

* Update docs/core/configuration.md

---------

Co-authored-by: Aliasgar Merchant <44069404+alijnmerchant21@users.noreply.github.com>
Co-authored-by: lasaro <lasaro@informal.systems>

docs/core/configuration.md

@@ -526,15 +526,15 @@ timeout_commit = "1s"
 Note that in a successful round, the only timeout that we absolutely wait no
 matter what is `timeout_commit`.
 Here's a brief summary of the timeouts:
-- `timeout_propose` = how long we wait for a proposal block before prevoting nil
-- `timeout_propose_delta` = how much  `timeout_propose` increases with each round
-- `timeout_prevote` = how long we wait after receiving +2/3 prevotes for
+- `timeout_propose` = how long a validator should wait for a proposal block before prevoting nil
+- `timeout_propose_delta` = how much `timeout_propose` increases with each round
+- `timeout_prevote` = how long a validator should wait after receiving +2/3 prevotes for
   anything (ie. not a single block or nil)
 - `timeout_prevote_delta` = how much the `timeout_prevote` increases with each round
-- `timeout_precommit` = how long we wait after receiving +2/3 precommits for
+- `timeout_precommit` = how long a validator should wait after receiving +2/3 precommits for
   anything (ie. not a single block or nil)
 - `timeout_precommit_delta` = how much the `timeout_precommit` increases with each round
-- `timeout_commit` = how long we wait after committing a block, before starting
+- `timeout_commit` = how long a validator should wait after committing a block, before starting
   on the new height (this gives us a chance to receive some more precommits,
   even though we already have +2/3)