clean the manual of unnecessary quote marks

Gentlemen, sorry to be a bore, but in
/usr/share/doc/git-doc/gitcore-tutorial.html
there are examples like
$ git-cat-file "blob" 557db03
which makes it look like the author is an expert in other things, but
not the shell, where
$ git-cat-file blob 557db03
would be fine. Do you really type those extra quotes when nobody else
is looking? Same even with
$ echo "Silly example" >example
Let's see, Of
$ echo Silly example >example
$ echo Silly example>example
$ echo Silly example > example
I'd pick the latter...