Tests: Fix missing reference to algorithm test

Change-Id: I7323995c01e1633b4a84fd24b2a3b99d663e5d13
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

tests/auto/auto.qbs

@@ -5,6 +5,7 @@ Project {
     condition: project.withAutotests
     references: [
         "aggregation/aggregation.qbs",
+        "algorithm/algorithm.qbs",
         "changeset/changeset.qbs",
         "clangstaticanalyzer/clangstaticanalyzer.qbs",
         "cplusplus/cplusplus.qbs",