Bug 1609943 - Refer to UpperCamelCase to remove ambiguity. r=sylvestre

Differential Revision: https://phabricator.services.mozilla.com/D60263

--HG--
extra : moz-landing-system : lando

tools/lint/docs/coding-style/coding_style_cpp.rst

@@ -194,7 +194,7 @@ Methods and functions
 C/C++
 ^^^^^
 
-In C/C++, method names should be capitalized and use camelCase.
+In C/C++, method names should use ``UpperCamelCase``.
 
 Getters that never fail, and never return null, are named ``Foo()``,
 while all other getters use ``GetFoo()``. Getters can return an object