Clarify jerk and junction deviation docs (#208)

Refactor and expand documentation for cornering control in speed_settings_jerk_xy.md: add a Key Effects section, reorganize Cornering Control Types, consolidate and clarify Junction Deviation (include formula, tips, and notes about Marlin/Classic Jerk), remove duplicated content, and explain how Orca limits jerk to Printer Motion Ability. Update printer_settings/motion ability/printer_motion_ability.md: reorder sections to place Maximum Junction Deviation after Maximum Jerk, update variable descriptions and link references, and clarify when M205 J/X/Y/Z/E apply.

.github/workflows/validate_internal_link.yml

@@ -333,7 +333,7 @@ jobs:
             }
 
             function isKebabCase(value) {
-              return /^[a-z0-9]+(?:-[a-z0-9]+)*$/.test(value);
+              return /^[a-z0-9]+(?:-+[a-z0-9]+)*$/.test(value);
             }
 
             function decodeLinkComponent(value) {