chore: fix some minor issues

Signed-off-by: bytetigers <[email protected]>

Author: bytetigers

SECURITY.md

@@ -18,7 +18,7 @@ recommend using the [latest version](https://github.com/ethereum/execution-specs
 ### What Contitutes a Serious Issue
 
 - Issues which affect any production EL client (geth, Nethermind, Besu, etc.)
-- EELS has inadvertantly leaked secure information into the codebase
+- EELS has inadvertently leaked secure information into the codebase
 
 ### What Does _Not_ Constitute a Serious Issue
 

network-upgrades/mainnet-upgrades/cancun.md

@@ -11,7 +11,7 @@ Execution layer changes included in the Network Upgrade.
 * [EIP-7516: BLOBBASEFEE opcode](https://eips.ethereum.org/EIPS/eip-7516)
 
 
-### Implementation Progresss
+### Implementation Progress
 
 Implementation status of Included EIPs across participating clients.
 

src/ethereum/prague/requests.py

@@ -1,5 +1,5 @@
 """
-Requests were introduced in EIP-7685 as a a general purpose framework for
+Requests were introduced in EIP-7685 as a general purpose framework for
 storing contract-triggered requests. It extends the execution header and
 body with a single field each to store the request information.
 This inherently exposes the requests to the consensus layer, which can