Fix typos on learn page

src/intl/en/page-learn.json

@@ -35,7 +35,7 @@
   "find-a-wallet-card-description": "Browse wallets based on the features that matter to you.",
   "find-a-wallet-button": "List of wallets",
   "ethereum-networks-card-title": "Ethereum networks",
-  "ethereum-networks-card-description": "Save money by using cheaper and faster Ethereum extentions.",
+  "ethereum-networks-card-description": "Save money by using cheaper and faster Ethereum extensions.",
   "ethereum-networks-card-button": "Choose network",
   "things-to-consider-banner-title": "Things to consider when using Ethereum",
   "things-to-consider-banner-1": "Each Ethereum transaction requires a fee in the form of ETH, even if you need to move different tokens built on Ethereum like the stablecoins USDC or DAI.",
@@ -79,7 +79,7 @@
   "energy-consumption-card-description": "How much energy does Ethereum use?",
   "energy-consumption-card-button": "Is Ethereum green?",
   "ethereum-upgrades-card-title": "Ethereum roadmap",
-  "ethereum-upgrades-card-description": "Ethereums roadmap make it more scalable, secure, and sustainable.",
+  "ethereum-upgrades-card-description": "Ethereum's roadmap makes it more scalable, secure, and sustainable.",
   "ethereum-upgrades-card-button": "Explore the roadmap",
   "ethereum-whitepaper-card-title": "Ethereum Whitepaper",
   "ethereum-whitepaper-card-description": "The original Ethereum proposal written by Vitalik Buterin in 2014.",