Correct some spellings.

Test: mma
Change-Id: Icc49a4ee76f12d302ed18982d334f2f70b7263a8
diff --git a/payload_state.h b/payload_state.h
index d1906c2..17c1ce0 100644
--- a/payload_state.h
+++ b/payload_state.h
@@ -337,7 +337,7 @@
 
   // Loads the number of bytes that have been currently downloaded through the
   // previous attempts from the persisted state for the given source. It's
-  // reset to 0 everytime we begin a full update and is continued from previous
+  // reset to 0 every time we begin a full update and is continued from previous
   // attempt if we're resuming the update.
   void LoadCurrentBytesDownloaded(DownloadSource source);
 
@@ -349,7 +349,7 @@
 
   // Loads the total number of bytes that have been downloaded (since the last
   // successful update) from the persisted state for the given source. It's
-  // reset to 0 everytime we successfully apply an update and counts the bytes
+  // reset to 0 every time we successfully apply an update and counts the bytes
   // downloaded for both successful and failed attempts since then.
   void LoadTotalBytesDownloaded(DownloadSource source);
 
@@ -485,7 +485,7 @@
   int32_t url_switch_count_;
 
   // The current download source based on the current URL. This value is
-  // not persisted as it can be recomputed everytime we update the URL.
+  // not persisted as it can be recomputed every time we update the URL.
   // We're storing this so as not to recompute this on every few bytes of
   // data we read from the socket.
   DownloadSource current_download_source_;