Clarify explanation for adding max-backjumps: 50000

Co-authored-by: Mateusz Galazyn <[email protected]>

Author: palas

cabal.project

@@ -29,8 +29,8 @@ if impl(ghc < 9.8)
 
 constraints: process >= 1.6.26.1
 
--- this slows down the build plan preparation, but it seems that without it
--- cabal has problems with resolving dependencies
+-- It may slow down build plan preparation, but without it cabal has problems
+-- with solving constraints. Remove this when not needed anymore.
 max-backjumps: 50000
 
 program-options