docs/book comments ch.4 part two

[Heiko]

Hi,

I found some time to continue my proofreading of chapter 4 of the parrot 
book, chapter 4.


In section 'VTABLEs', 4th paragraph
'if you would like to name the function'
instead of
'if you would like to namethe function'

In the last code example of this section:
typo in 2nd last code line in comment:
'# Convert to a string, store in $S0'
instead of
'# Convert to a string, store in SS0'
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