Fix typo

[BraisGabin]

Fixes https://kotlinlang.slack.com/archives/C88E12QH4/p1597387185257400

[codecov]

Codecov Report

Merging #2969 into master will increase coverage by 0.02%.
The diff coverage is 76.47%.

@@             Coverage Diff              @@
##             master    #2969      +/-   ##
============================================
+ Coverage     80.25%   80.27%   +0.02%     
- Complexity     2465     2478      +13     
============================================
  Files           423      424       +1     
  Lines          7440     7473      +33     
  Branches       1358     1369      +11     
============================================
+ Hits           5971     5999      +28     
+ Misses          763      760       -3     
- Partials        706      714       +8     

Impacted Files	Coverage Δ	Complexity Δ
...ab/arturbosch/detekt/rules/style/UnnecessaryLet.kt	79.48% <ø> (ø)	13.00 <0.00> (ø)
...turbosch/detekt/rules/bugs/NullableToStringCall.kt	74.19% <74.19%> (ø)	10.00 <10.00> (?)
...turbosch/detekt/rules/bugs/PotentialBugProvider.kt	100.00% <100.00%> (ø)	2.00 <0.00> (ø)
.../arturbosch/detekt/rules/style/UnnecessaryApply.kt	88.46% <100.00%> (+0.46%)	8.00 <0.00> (+1.00)
.../gitlab/arturbosch/detekt/api/internal/BaseRule.kt	100.00% <0.00%> (+6.25%)	6.00% <0.00%> (ø%)
...rturbosch/detekt/api/internal/CompilerResources.kt	100.00% <0.00%> (+66.66%)	3.00% <0.00%> (+2.00%)

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