docs: fix link in getting started docs (#26173)

docs/_getting-started/index.md

@@ -13,7 +13,7 @@ The tutorial on this page assumes Geth and the associated developer tools have b
 
 This page provides step-by-step instructions covering the fundamentals of using Geth. This includes 
 generating accounts, joining an Ethereum network, syncing the blockchain and sending ether between accounts. 
-It is considered best-practice to use [Clef](/docs/clef/Introduction) for account management - this 
+It is considered best-practice to use [Clef](/docs/clef/introduction) for account management - this 
 is explained in the [Geth with Clef](/docs/getting-started/geth_with_clef) tutorial. In this 
 introductory tutorial, Geth's built-in account management tools are used instead.
 
@@ -449,4 +449,4 @@ following this with the [Geth with Clef](/docs/getting-started/geth_with_clef) t
 adopt more secure account management practices than those outlined here.
 
 
-[cli]: https://developer.mozilla.org/en-US/docs/Learn/Tools_and_testing/Understanding_client-side_tools/Command_line
+[cli]: https://developer.mozilla.org/en-US/docs/Learn/Tools_and_testing/Understanding_client-side_tools/Command_line