S99: boolean related entries, attempt at fix whitespace

S99-glossary.pod

@@ -184,7 +184,8 @@ L</Value> of type L</Bool>. Apart the class itself, can be either <True> or <Fal
 
 A L</context> that forces an L</expression> to give a L</boolean> value.
 The L</prefix> L</operators> C<so>, C<not> and their
-repective higher L</precedence> C<?> and <!> forms force a boolean context.
+repective higher L</precedence> C<?> and C<!> forms force a boolean context with <!> and C<not> doing
+a negation. 
 The L</predicate> part of a L</control flow> L</statement> forces a boolean context.
 A class can define a C<Bool> method to handle the boolean context.
 For L</native>s, within L</MoarVM>, it is handled by L</MVMBoolificationSpec> member
@@ -1711,7 +1712,7 @@ L<http://doc.perl6.org/type/Whatever>.
 
 =head2 whitespace
 
-Any Perl 6 L</token> may or must be separated by tokens.
+Any Perl 6 L</token> may or must be separated by whitespaces.
 L</comment>s are whitespaces .
 
 =head2 WIP