Update release-0-4-0-blog.rst

[dmoore247]

Fixed code sample, spark variable should be assigned to glow.register(spark)

What changes are proposed in this pull request?

Fix code example

How is this patch tested?

• [ x] Unit tests - Tested in my notebook
• [ x] Integration tests - Tested in my notebook
• [ x] Manual tests - Tested in my notebook

(Details)

[codecov[bot]]

Codecov Report

Merging #408 (2ce9d4a) into master (351befb) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #408   +/-   ##
=======================================
  Coverage   93.69%   93.69%           
=======================================
  Files          95       95           
  Lines        4824     4824           
  Branches      466      466           
=======================================
  Hits         4520     4520           
  Misses        304      304           

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[williambrandler]

thanks @dmoore247, your commit is just missing a signoff from DCO

Given that this is a small change, the safest way to fix this is to create a new branch, add the fix and then make sure to signoff your commit using "--signoff" or "-s"

git commit -m "initial commit" --signoff

[williambrandler]

@dmoore247 please resolve the signoff (DCO) when you get a chance, want to include your contribution in the v1.1.1 release notes, which I plan to do tomorrow

[williambrandler]

manually approving commit sign off