[docs] windows orderfile: nit

TBR=hans@chromium.org

Bug: None
Change-Id: I0007fb38499a66a50cddf89b65ef1dc8fc58e077
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1948934Reviewed-by: Egor Pasko <pasko@chromium.org>
Reviewed-by: Hans Wennborg <hans@chromium.org>
Commit-Queue: Egor Pasko <pasko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#721008}

docs/win_order_files.md

@@ -44,9 +44,9 @@ To update the order files:
     Note the Process ID of the browser process.
 
     Check in `\src\tmp\` for instrumentation output from the process, for
-    example `cygprofile_14652.txt`.txt`. The files are
-    only written once a certain number of function calls have been made, so
-    sometimes you need to browse a bit for the file to be produced.
+    example `cygprofile_14652.txt`. The files are only written once a certain
+    number of function calls have been made, so sometimes you need to browse a
+    bit for the file to be produced.
 
 1.  If the file appears to have sensible contents (a long list of function names
     that eventually seem related to what the browser should