message: Fix images not showing in profiler README
diff: @@ -206,9 +206,8 @@ Timeline file is written to <filename>.
  Open a Chrome browser, enter URL chrome://tracing and load the timeline file.
  ******************************************************
  ```
  -<left>
  +
  ![Timeline](g3doc/graph_timeline.png)
  -</left>
  ```
  # The following example generates a pprof graph (only supported by code view).
  @@ -226,9 +225,7 @@ tfprof> code -select accelerator_micros -max_depth 100000 -output pprof:outfile=
  pprof -png --nodecount=100 --sample_index=1 <filename>
  ```
  -<left>
  ![PprofGraph](g3doc/pprof.jpg)
  -</left>
  ### Feature Request and Bug Report
  