chore: remove repetitive words

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

public/content/roadmap/merge/index.md

@@ -27,7 +27,7 @@ Imagine Ethereum is a spaceship that launched before it was quite ready for an i
 
 ## Merging with Mainnet {#merging-with-mainnet}
 
-Proof-of-work secured Ethereum Mainnet from genesis until The Merge. This allowed the Ethereum blockchain we're all used to to come into existence in July 2015 with all its familiar features—transactions, smart contracts, accounts, etc.
+Proof-of-work secured Ethereum Mainnet from genesis until The Merge. This allowed the Ethereum blockchain we're all used to come into existence in July 2015 with all its familiar features—transactions, smart contracts, accounts, etc.
 
 Throughout Ethereum's history, developers prepared for an eventual transition away from proof-of-work to proof-of-stake. On December 1, 2020, the Beacon Chain was created as a separate blockchain to Mainnet, running in parallel.
 

public/content/whitepaper/index.md

@@ -295,7 +295,7 @@ def register(name, value):
     self.storage[name] = value
 ```
 
-The contract is very simple; all it is is a database inside the Ethereum network that can be added to, but not modified or removed from. Anyone can register a name with some value, and that registration then sticks forever. A more sophisticated name registration contract will also have a "function clause" allowing other contracts to query it, as well as a mechanism for the "owner" (ie. the first registerer) of a name to change the data or transfer ownership. One can even add reputation and web-of-trust functionality on top.
+The contract is very simple; all it is a database inside the Ethereum network that can be added to, but not modified or removed from. Anyone can register a name with some value, and that registration then sticks forever. A more sophisticated name registration contract will also have a "function clause" allowing other contracts to query it, as well as a mechanism for the "owner" (ie. the first registerer) of a name to change the data or transfer ownership. One can even add reputation and web-of-trust functionality on top.
 
 ### Decentralized File Storage {#decentralized-file-storage}