gears.color: expose documentation for create_(linear|radial)_pattern functions

The documentation for these functions were hidden (intentionally?) from luadoc
because of misspelt @class and @name tags. Fixed the spelling, so luadoc can do
its job.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>
Signed-off-by: Uli Schlachter <psychon@znc.in>

lib/gears/color.lua.in

@@ -86,8 +86,8 @@ end
 -- For the explanation of "<stops>", see add_stops().
 -- @param arg The argument describing the pattern
 -- @return a cairo pattern object
--- @nname create_linear_pattern
--- @nclass function
+-- @name create_linear_pattern
+-- @class function
 
 --- Create a radial pattern object.
 -- The pattern is created from a string. This string should have the following
@@ -97,8 +97,8 @@ end
 -- For the explanation of "<stops>", see add_stops().
 -- @param arg The argument describing the pattern
 -- @return a cairo pattern object
--- @nname create_radial_pattern
--- @nclass function
+-- @name create_radial_pattern
+-- @class function
 
 for k, v in pairs({ linear = capi.oocairo.pattern_create_linear,
                     radial = capi.oocairo.pattern_create_radial}) do