Fix: Typo in UICollectionViewExtensions and UITableViewExtensions

[ShivaHuang]

All functions with prefix deque should be dequeue.

Checklist

• I checked the Contributing Guidelines before creating this request.
• I have only one commit in this pull request.
• New extensions support iOS 8 or later.
• New extensions are written in Swift 3.
• I have added tests for new extensions, and they passed.
• Pull request was created to master head branch.
• All extensions have a clear comments explaining their functionality, all parameters and return type in English.
• All comments headers have the word SwifterSwift: before description.

[codecov]

Codecov Report

Merging #137 into master will not change coverage.
The diff coverage is 89.47%.

@@           Coverage Diff           @@
##           master     #137   +/-   ##
=======================================
  Coverage   88.61%   88.61%           
=======================================
  Files          75       75           
  Lines        4303     4303           
=======================================
  Hits         3813     3813           
  Misses        490      490

Impacted Files	Coverage Δ
.../Extensions/UIKit/UICollectionViewExtensions.swift	57.14% <0%> (ø)	⬆️
...itExtensionsTests/UITableViewExtensionsTests.swift	94.04% <100%> (ø)	⬆️
...ource/Extensions/UIKit/UITableViewExtensions.swift	93.47% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a0f686b...ecd376e. Read the comment docs.

[omaralbeik]

Thank you @ShivaHuang!

[SD10]

Thank you @ShivaHuang. This closes #136. I'll update the docs in a few hours from now.