A bit of rectification for learning/tweaks regarding Scheme values (issue 6868063)

[tdanielsmusic]

Thanks David.  Relatively minor quibbles only.


https://codereview.appspot.com/6868063/diff/1/Documentation/learning/tweaks.itely
File Documentation/learning/tweaks.itely (right):

https://codereview.appspot.com/6868063/diff/1/Documentation/learning/tweaks.itely#newcode902
Documentation/learning/tweaks.itely:902: @extending{Calculations in
Scheme}.
@rextend

https://codereview.appspot.com/6868063/diff/1/Documentation/learning/tweaks.itely#newcode925
Documentation/learning/tweaks.itely:925: symbol names, enclosed in
parentheses.
Drop the comma to make it clear the apostrophe is
outside the parentheses or (my preference) use the
original sentence construction to preserve the same
form as the other entries.

https://codereview.appspot.com/6868063/diff/1/Documentation/learning/tweaks.itely#newcode937
Documentation/learning/tweaks.itely:937: @tab Any positive or negative,
possibly decimal value
, possibly decimal,

https://codereview.appspot.com/6868063/diff/1/Documentation/learning/tweaks.itely#newcode952
Documentation/learning/tweaks.itely:952: @tab A constant vector can be
written by writing constants
I'd prefer the same form as the other entries,
just stating what it is, rather than how it might
be constructed.

https://codereview.appspot.com/6868063/