Fixed typo for 5.0.0 in History.rdoc. (tnir)

[git-p4: depot-paths = "//src/minitest/dev/": change = 13275]

Author: zenspider

History.rdoc

@@ -561,7 +561,7 @@ Minitest 5:
   * Added Minitest::Benchmark.
     * Your benchmarks need to move to their own subclass.
     * Benchmarks using the spec DSL have to have "Bench" somewhere in their describe.
-  * MiniTest::Unit.after_tests moved to Minitest.after_tests
+  * MiniTest::Unit.after_tests moved to Minitest.after_run
   * MiniTest::Unit.autorun is now Minitest.autorun. Just require minitest/autorun pls.
   * Removed ParallelEach#grep since it isn't used anywhere.
   * Renamed Runnable#__name__ to Runnable#name (but uses @NAME internally).