Update index.md

Signed-off-by: matt-nervos <[email protected]>

ultimate_guide_to_payment_channels/index.md

@@ -1,7 +1,7 @@
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 title: 'The Ultimate Guide to Payment Channels and Payment Channel Networks'
 coverImage: 'images/image7.png'
-category: Payments
+category: Popular
 subtitle: 'As cryptocurrencies become increasingly popular, the idea of blockchains eventually becoming the backbone of the future’s payment systems becomes ever more alluring.'
 date: '2024-01-17T16:00:00.000Z'
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@@ -156,4 +156,4 @@ The intricate design of payment channels, employing mechanisms like Hashed Timel
 
 Moreover, the introduction of these channels addresses several critical issues faced by traditional blockchains, such as high transaction fees and long confirmation times, which have been barriers to the widespread adoption of cryptocurrencies for everyday transactions. By allowing for nearly instant transactions with negligible fees, payment channels make the use of cryptocurrencies more practical and appealing for regular transactions, bringing us a step closer to the vision of cryptocurrencies as a viable alternative to traditional fiat currencies in everyday commerce.
 
-Ultimately, the evolution of payment channels and networks signifies a pivotal moment in the ongoing development of blockchain technology. As these solutions continue to mature and gain adoption, they promise to unlock new possibilities for the use of cryptocurrencies and decentralized ledger technologies, paving the way for a more efficient, secure, and accessible financial system in the digital age.
+Ultimately, the evolution of payment channels and networks signifies a pivotal moment in the ongoing development of blockchain technology. As these solutions continue to mature and gain adoption, they promise to unlock new possibilities for the use of cryptocurrencies and decentralized ledger technologies, paving the way for a more efficient, secure, and accessible financial system in the digital age.