Fix indentation inside modules

[DilumAluthge]

Most Julia packages follow the convention that you don't increase an indentation level inside a module.

This PR fixes the code in this package to follow that convention.

There are no changes other than fixing the indentation and whitespace.

[codecov]

Codecov Report

Merging #319 (7e69ff8) into master (996d94c) will increase coverage by 0.49%.
The diff coverage is 90.64%.

@@            Coverage Diff             @@
##           master     #319      +/-   ##
==========================================
+ Coverage   90.14%   90.64%   +0.49%     
==========================================
  Files           2        2              
  Lines         203      203              
==========================================
+ Hits          183      184       +1     
+ Misses         20       19       -1     

Impacted Files	Coverage Δ
src/codecovio.jl	86.86% <86.86%> (+3.03%)	⬆️
src/coveralls.jl	94.23% <94.23%> (-1.93%)	⬇️

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[coveralls]

Pull Request Test Coverage Report for Build 934114613

• 184 of 203 (90.64%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 90.64%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/coveralls.jl	98	104	94.23%
src/codecovio.jl	86	99	86.87%

Totals
Change from base Build 934106591:	0.5%
Covered Lines:	184
Relevant Lines:	203

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💛 - Coveralls