chore: add SLND/USD to sponsored feeds (#364)

* Add solend to sponsored feeds

* Fix precommit:

Author: guibescos

pages/price-feeds/sponsored-feeds.mdx

@@ -49,6 +49,7 @@ The addresses represent the price feed account for shard 0 of the relevant price
 | XAG/USD     | `H9JxsWwtDZxjSL6m7cdCVsWibj3JBMD9sxqLjadoZnot` | `f2fb02c32b055c805e7238d628e5e9dadef274376114eb1f012337cabe93871e` |
 | XAU/USD     | `2uPQGpm8X4ZkxMHxrAW1QuhXcse1AHEgPih6Xp9NuEWW` | `765d2ba906dbc32ca17cc11f5310a89e9ee1f6420508c63861f2f8ba4ee34bb2` |
 | INJ/USD     | `GwXYEfmPdgHcowF9GZwbb1WiTGTn1fuT3hbSLneoBKK6` | `7a5bc1d2b56ad029048cd63964b3ad2776eadf812edc1a43a31406cb54bff592` |
+| SLND/USD    | `6vPfd6612huknxXaDapfj6cVmB8NvCwKm3BHKFxzo1EZ` | `f8d030e4ef460b91ad23eabbbb27aec463e3c30ecc8d5c4b71e92f54a36ccdbd` |
 
 ## Sui