install/verify: Fix broken link pointed by bors

Signed-off-by: Antonio Gutierrez <[email protected]>

Author: chibby0ne

src/intro/install/verify.md

@@ -45,7 +45,7 @@ The contents may not match exactly but you should get the last line about
 breakpoints and watchpoints. If you got it then terminate the OpenOCD process
 and move to the [next section].
 
-[next section]: ../../../start/index.md
+[next section]: ../../start/index.md
 
 If you didn't get the "breakpoints" line then try the following command.