Update main.tf

[amitvashisttech]

In this example [ log_uri = format("s3://%s", module.s3_log_storage.bucket_id) ], which cause EMR cluster rebuild in terraform apply.

After adding a missing back slash in the log_uri definition solves the problem.

what

• Describe high-level what changed as a result of these commits (i.e. in plain-english, what do these changes mean?)
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why

• Provide the justifications for the changes (e.g. business case).
• Describe why these changes were made (e.g. why do these commits fix the problem?)
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references

• Link to any supporting github issues or helpful documentation to add some context (e.g. stackoverflow).
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[aknysh]

/test all