fix example code for image classifier - resnet18 model

[udaij12]

Description

Update example code for resnet18 model under image classifier. Fixed instructions so that code would work as explained.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Feature/Issue validation/testing

No need for unit tests as just documentation update. Previous documentation said if path is: /home/my_path/serve, run the steps from /home/my_path however the code ./examples/ will not work from /my_path. So documentation updated to run the steps from /home/my_path/serve which fixes this issue.

Checklist:

• Did you have fun?
• Have you added tests that prove your fix is effective or that this feature works?
• Has code been commented, particularly in hard-to-understand areas?
• Have you made corresponding changes to the documentation?

[codecov]

Codecov Report

Merging #2568 (8e8ed48) into master (499d33d) will not change coverage.
The diff coverage is n/a.

❗ Current head 8e8ed48 differs from pull request most recent head f3093d9. Consider uploading reports for the commit f3093d9 to get more accurate results

@@           Coverage Diff           @@
##           master    #2568   +/-   ##
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  Coverage   72.71%   72.71%           
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  Files          79       79           
  Lines        3742     3742           
  Branches       58       58           
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  Hits         2721     2721           
  Misses       1017     1017           
  Partials        4        4           

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