kcm/mouse: Fix small typos in doc
Fix tiny typo in pointer acceleration description (originating from !1589 (closed)), and correct hyphenation/spacing for "touchpad" and "trackball" to be consistent with how they're written everywhere else.
Fix tiny typo in pointer acceleration description (originating from !1589 (closed)), and correct hyphenation/spacing for "touchpad" and "trackball" to be consistent with how they're written everywhere else.