Correct some spellings.

Test: mma
Change-Id: Icc49a4ee76f12d302ed18982d334f2f70b7263a8
diff --git a/p2p_manager_unittest.cc b/p2p_manager_unittest.cc
index 5ffb358..01bdc35 100644
--- a/p2p_manager_unittest.cc
+++ b/p2p_manager_unittest.cc
@@ -183,7 +183,7 @@
 }
 
 // Check that we keep files with the .$EXT.p2p extension not older
-// than some specificed age (5 days, in this test).
+// than some specific age (5 days, in this test).
 TEST_F(P2PManagerTest, HousekeepingAgeLimit) {
   // We set the cutoff time to be 1 billion seconds (01:46:40 UTC on 9
   // September 2001 - arbitrary number, but constant to avoid test