Fix typo errors in SplitPane.kt

[luisgarcia96]

This PR addresses typographical errors in the comments of the splitpane package. The corrections are as follows:

1. VerticalSplitPane function comment:

   • Original: "Pane that place it parts vertically from top to bottom and allows to change items heights."
   • Correction: "Pane that places its parts vertically from top to bottom and allows changing items' heights."

2. HorizontalSplitPane function comment:

   • Original: "Pane that place it parts horizontally from left to right and allows to change items width."
   • Correction: "Pane that places its parts horizontally from left to right and allows changing items' widths."

3. SplitPane function comment:

   • Original: "@param isHorizontal describes is it horizontal of vertical split pane"
   • Correction: "@param isHorizontal describes whether it is a horizontal or vertical split pane"

These changes enhance the clarity and grammatical accuracy of the code comments.

Fixes

N/A

Testing

As these changes are limited to comments and do not affect the executable code, no additional testing is required.

Release Notes

N/A

Since the changes are non-functional and pertain only to code comments, they do not necessitate an entry in the release notes.