run.bat: use ..\bin\go instead of "go" to install std and cmd

The paths for the other "go" commands in this file were fixed in CL 223741,
but this one was missed (and run.bat is not caught by the builders).

Change-Id: Iba1efddc7d2fbe6af39c39d643508decc954bbc5
Reviewed-on: https://go-review.googlesource.com/c/go/+/234758
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/src/run.bat b/src/run.bat
index 896c4ac..69c1818 100644
--- a/src/run.bat
+++ b/src/run.bat
@@ -30,7 +30,7 @@
 
 if x%1==x--no-rebuild goto norebuild
 echo ##### Building packages and commands.
-go install -a -v std cmd
+..\bin\go install -a -v std cmd
 if errorlevel 1 goto fail
 echo.
 :norebuild