Formulate rule/style descriptions consistently

[schalkms]

reference #4384

[codecov]

Codecov Report

Merging #4414 (fb5f300) into main (48a28fc) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main    #4414      +/-   ##
============================================
+ Coverage     84.23%   84.29%   +0.05%     
- Complexity     3259     3282      +23     
============================================
  Files           474      474              
  Lines         10323    10437     +114     
  Branches       1825     1861      +36     
============================================
+ Hits           8696     8798     +102     
- Misses          666      670       +4     
- Partials        961      969       +8     

Impacted Files	Coverage Δ
...rbosch/detekt/rules/style/EqualsOnSignatureLine.kt	72.72% <ø> (ø)
...kt/rules/style/LibraryCodeMustSpecifyReturnType.kt	88.57% <ø> (ø)
...h/detekt/rules/style/DataClassContainsFunctions.kt	95.65% <100.00%> (ø)
...h/detekt/rules/style/DataClassShouldBeImmutable.kt	100.00% <100.00%> (ø)
...les/style/ExplicitCollectionElementAccessMethod.kt	63.63% <100.00%> (+1.56%)	⬆️
...urbosch/detekt/rules/style/ExpressionBodySyntax.kt	83.33% <100.00%> (ø)
...b/arturbosch/detekt/rules/style/ForbiddenImport.kt	95.45% <100.00%> (ø)
...etekt/rules/style/FunctionOnlyReturningConstant.kt	95.45% <100.00%> (ø)
...kt/rules/style/LibraryEntitiesShouldNotBePublic.kt	88.46% <100.00%> (ø)
...lab/arturbosch/detekt/rules/style/MaxLineLength.kt	94.59% <100.00%> (ø)
... and 54 more

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