bug variable name in reshape

[mtar]

Description

In reshape a wrong variable is used at one point.

Issue/s resolved: None

Changes proposed:

• correction of the array name

Type of change

Bug fix

Due Diligence

• All split configurations tested
• Multiple dtypes tested in relevant functions
• Documentation updated (if needed)
• Updated changelog.md under the title "Pending Additions"

Does this change modify the behaviour of other functions? If so, which?

no

[codecov]

Codecov Report

Merging #578 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #578   +/-   ##
=======================================
  Coverage   96.47%   96.47%           
=======================================
  Files          75       75           
  Lines       15169    15169           
=======================================
  Hits        14634    14634           
  Misses        535      535           

Impacted Files	Coverage Δ
heat/core/manipulations.py	99.51% <100.00%> (ø)

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