[AL2023]Changing the syntax for the command as it gives error for a numercial error

[himani2411]

I see below error during Checksum Match which is same but due to the syntax it shows a mismatch

cinc-install.sh: line 225: return: : numeric argument required
Package checksum mismatch!

Took the syntax from https://cinc.sh/download/

Tests

• Manually tested on an Ec2 instance
• Integ Tests

{%- import 'common.jinja2' as common with context -%}
---
test-suites:
  createami:
    test_createami.py::test_build_image:
      dimensions:
        - regions: ["us-east-1"]
          instances: {{ common.INSTANCES_DEFAULT_X86 }}
          oss: {{ common.OSS_COMMERCIAL_X86 }}
          schedulers: [ "slurm" ]

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