docs: Fix a few typos

[timgates42]

There are small typos in:

• src/math.js
• src/vector/Element.js
• src/vector/PathBase.js
• src/vector/Renderer.js
• src/vector/Stage.js
• src/vector/vml/Defs.js

Fixes:

• Should read transformation rather than trasformation.
• Should read sense rather than sence.
• Should read trapezoid rather than trapeziod.
• Should read transformation rather than transofrmatin.
• Should read properties rather than propeties.
• Should read length rather than lenght.
• Should read initial rather than intial.
• Should read degrees rather than degress.

Semi-automated pull request generated by
https://github.com/timgates42/meticulous/blob/master/docs/NOTE.md