Renamed `everyFifthNonWhitespace` to `everyFifthNonSpace` to avoid confusion with whitespaces

https://youtrack.jetbrains.com/issue/EDC-421

Programming Basics/Summary 1/Exercise 6/src/Task.kt

@@ -1,7 +1,7 @@
 // Summary1/Task6.kt
 package summaryIExercise6
 
-fun everyFifthNonWhitespace(s: String) {
+fun everyFifthNonSpace(s: String) {
   var i = 1
   for (c in s) {
     if (i % 5 == 0 && c != ' ') {
@@ -12,7 +12,7 @@ fun everyFifthNonWhitespace(s: String) {
 }
 
 fun main() {
-  everyFifthNonWhitespace("abc d e fgh ik")
+  everyFifthNonSpace("abc d e fgh ik")
 }
 /* Output:
 e

Programming Basics/Summary 1/Exercise 6/task-info.yaml

@@ -3,7 +3,7 @@ files:
 - name: src/Task.kt
   visible: true
   placeholders:
-  - offset: 91
+  - offset: 86
     length: 109
     placeholder_text: TODO()
 - name: test/Tests.kt

Programming Basics/Summary 1/Exercise 6/task.md

@@ -1,6 +1,6 @@
 ## Summary 1 (#6)
 
-Implement `everyFifthNonWhitespace()` to display every fifth non-whitespace
-character in the given text. For example, `everyFifthNonWhitespace("abc d e fgh
- ik")` displays the characters `e` (fifth character if not counting
-whitespaces) and `k` (tenth).
+Implement `everyFifthNonSpace()` to display every fifth non-space
+character in the given text. For example, `everyFifthNonSpace("abc d e fgh
+ ik")` displays the characters `e` (fifth character if not counting spaces) and
+`k` (tenth).

Programming Basics/Summary 1/Exercise 6/test/Tests.kt

@@ -15,7 +15,7 @@ class TestSummaryIExercise6 {
       .joinToString("\n")
     runAndCheckSystemOutput("Wrong result for 'everyFifthNonWhitespace()'",
       expected) {
-      everyFifthNonWhitespace(s)
+      everyFifthNonSpace(s)
     }
   }