awful.client: do not export documentation of local functions

Signed-off-by: Julien Danjou <julien@danjou.info>

lib/awful/client.lua.in

@@ -237,7 +237,7 @@ function next(i, c)
     end
 end
 
---- Return true whether client B is in the right direction
+-- Return true whether client B is in the right direction
 -- compared to client A.
 -- @param dir The direction.
 -- @param cA The first client.
@@ -256,7 +256,7 @@ local function is_in_direction(dir, cA, cB)
     return false
 end
 
---- Calculate distance between two points.
+-- Calculate distance between two points.
 -- i.e: if we want to move to the right, we will take the right border
 -- of the currently focused client and the left side of the checked client.
 -- This avoid the focus of an upper client when you move to the right in a
@@ -284,7 +284,7 @@ local function calculate_distance(dir, cA, cB)
     return math.sqrt(math.pow(xB - xA, 2) + math.pow(yB - yA, 2))
 end
 
---- Get the nearest client in the given direction
+-- Get the nearest client in the given direction
 -- @param dir The direction, can be either "up", "down", "left" or "right".
 -- @param c Optional client to get a client relative to. Else focussed is used.
 local function get_client_in_direction(dir, c)