ImGuiIntegration: doc++

[pezcode]

Two minor doc comment fixes 🍇

• ImGui::SetContextCurent() -> ImGui::SetCurrentContext()
• ImGui::DeleteContext() -> ImGui::DestroyContext()

[codecov[bot]]

Codecov Report

Merging #95 (eab4430) into master (d996864) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #95   +/-   ##
=======================================
  Coverage   78.67%   78.67%           
=======================================
  Files          21       21           
  Lines         938      938           
=======================================
  Hits          738      738           
  Misses        200      200           

Impacted Files	Coverage Δ
src/Magnum/ImGuiIntegration/Context.h	100.00% <ø> (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 d996864...eab4430. Read the comment docs.

[mosra]

Thank you!