docs: fix multiple typos

docs/the_auditors_handbook/src/03.5_the_threat_model.md

@@ -18,7 +18,7 @@ This includes but not limited to:
 
 In particular, we do not defend against a malicious cloud provider which would offer
 a “Rent-a-Raspberry-Pi” service for validators and would subsequently engage in attacks against
-those validators, the implest being, taking the validator offline when it's their duty time.
+those validators, the simplest being, taking the validator offline when it's their duty time.
 
 Sensitive data:
 1. Signing key: each validator has a secret signing key used to sign attestation and blocks with 32 ETH at stake (about 7500 USD at the current rate)

docs/the_auditors_handbook/src/03_nbc_nimbus_beacon_chain.md

@@ -1,7 +1,7 @@
 # Nimbus Beacon Chain
 
 !!! warning
-    This auditors' handbook is frozen and obsolete; the [Nim language manual](https://nim-lang.org/docs/manual.html) alongside [other Nim documentation](https://nim-lang.org/documentation.html), [Status Nim style guide](https://status-im.github.io/nim-style-guide/), [Chronos guides](https://github.com/status-im/nim-chronos/blob/master/docs/src/SUMMARY.md), and [Nim by Example](https://nim-by-example.github.io/getting_started/) supercede it.
+    This auditors' handbook is frozen and obsolete; the [Nim language manual](https://nim-lang.org/docs/manual.html) alongside [other Nim documentation](https://nim-lang.org/documentation.html), [Status Nim style guide](https://status-im.github.io/nim-style-guide/), [Chronos guides](https://github.com/status-im/nim-chronos/blob/master/docs/src/SUMMARY.md), and [Nim by Example](https://nim-by-example.github.io/getting_started/) supersede it.
 
 [https://github.com/status-im/nimbus-eth2](https://github.com/status-im/nimbus-eth2)
 

docs/the_nimbus_book/src/validator-client-options.md

@@ -2,7 +2,7 @@
 
 In the most simple setup, a single beacon node paired with an execution client is all that is needed to run a successful validator setup.
 
-Nimbus however also provides options for running advanded setups that provide additional security and redundancy.
+Nimbus however also provides options for running advanced setups that provide additional security and redundancy.
 
 See the [validator client page](./validator-client.md) to get started!