Fix api docs

Author: evaera

src/create.lua

@@ -3,6 +3,7 @@
 	@function create
 	@param className string -- The class name of the Instance to create
 	@param props CreateProps
+	@return Instance -- The created instance
 	@tag utilities
 
 	A function that creates an Instance tree.
@@ -12,6 +13,8 @@
 	- Numerical keys are interpreted as children
 	- Function values are interpreted as event handlers
 
+	This function doesn't do anything special. It just creates an instance.
+
 	```lua
 	create("Frame", {
 		BackgroundTransparency = 1,

src/widgets/arrow.lua

@@ -4,6 +4,7 @@
 	@tag widgets
 	@param from Vector3 | CFrame | BasePart
 	@param to Vector3 | BasePart | nil
+	@param color Color3? -- Optional color. Random if not specified.
 
 	- `arrow(from: Vector3, to: Vector3)` -> Creates an arrow between `from` and `to`
 	- `arrow(point: Vector3)` -> Creates an arrow pointing at `point`