lib/ai: fix typo in doc

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/ai/search.nit b/lib/ai/search.nit
index 248ab7c..f279d4f 100644 (file)
--- a/lib/ai/search.nit
+++ b/lib/ai/search.nit
@@ -99,7 +99,7 @@ interface SearchProblem[S: Object, A]
        # An heuristic of the estimated `cost` going from `state` to a goal state.
        #
        # Is is expected that the heuristic is *admissible*, it means its is an
-       # optimistic estimation that never an over-estimate, thus is cannot be#
+       # optimistic estimation and never an over-estimate, thus is cannot be
        # higher than the lowest possible remaining cost.
        # See `SearchSolver::do_revisit` for details.
        #