spelling: parenthesis

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

Author: jsoref

utils/gyb_syntax_support/Classification.py

@@ -39,7 +39,7 @@ def __init__(self, name, description):
     A string literal including multiline string literals.
     '''),
     SyntaxClassification('StringInterpolationAnchor', description='''
-    The opening and closing paranthesis of string interpolation.
+    The opening and closing parenthesis of string interpolation.
     '''),
     SyntaxClassification('PoundDirectiveKeyword', description='''
     A `#` keyword like `#warning`.