chore: minor whitespace fixes (#677)

* lint: pin golangci-lint version

* chore: minor whitespace fixes

* lint: enable whitespace linter

* Apply suggestions from code review

---------

Co-authored-by: Samuel Berthe <dev@samuel-berthe.fr>

.golangci.yml

@@ -29,6 +29,7 @@ linters:
     - funlen
     # - wsl_v5
     - testifylint
+    - whitespace
 
   # disable noisy/controversial ones which you might enable later
   disable:
@@ -77,13 +78,10 @@ linters:
           - funlen
         path: "_test\\.go$"
 
-
-
 issues:
   max-issues-per-linter: 0  # 0 = unlimited (we want ALL issues)
   max-same-issues: 100
 
-
 formatters:
   enable:
     - gofmt

README.md

@@ -851,7 +851,6 @@ The order of keys in returned map is not specified and is not guaranteed to be t
 
 The third return value of the transform function is a boolean that indicates whether the key-value pair should be included in the map.
 
-
 ```go
 list := []string{"a", "aa", "aaa"}
 
@@ -1692,7 +1691,6 @@ mean := lo.MeanBy([]float64{}, mapper)
 
 [[play](https://go.dev/play/p/j7TsVwBOZ7P)]
 
-
 ### Mode
 
 Calculates the mode (most frequent value) of a collection of numbers.
@@ -1701,7 +1699,6 @@ If multiple values have the same highest frequency, then multiple values are ret
 
 If the collection is empty, the zero value of `T[]` is returned.
 
-
 ```go
 mode := lo.Mode([]int{2, 2, 3, 4})
 // [2]
@@ -2449,7 +2446,6 @@ Filters a slice by excluding elements whose extracted keys match any in the excl
 
 Returns a new slice containing only the elements whose keys are not in the exclude list.
 
-
 ```go
 type struct User {
     ID int
@@ -3034,8 +3030,6 @@ lo.Sample([]string{})
 
 [[play](https://go.dev/play/p/FYA45LcpfM2)]
 
-
-
 ### SampleBy
 
 Returns a random item from collection, using a given random integer generator.
@@ -3074,7 +3068,6 @@ lo.SamplesBy([]string{"a", "b", "c"}, 3, r.Intn)
 
 A single line if/else statement.
 
-
 ```go
 result := lo.Ternary(true, "a", "b")
 // "a"

img/README.md

@@ -1,2 +1 @@
-
-Credit goes to https://gopherize.me/
+Credit goes to https://gopherize.me/

map_test.go

@@ -582,6 +582,5 @@ func BenchmarkAssign(b *testing.B) {
 				})
 			}
 		})
-
 	}
 }

retry.go

@@ -323,7 +323,6 @@ func (th *throttleBy[T]) throttledFunc(key T) {
 		for _, f := range th.callbacks {
 			f(key)
 		}
-
 	}
 	if th.timer == nil {
 		th.timer = time.AfterFunc(th.interval, func() {