Fix typo

Author: LilithHafner

src/primitives/rectangles.jl

@@ -67,7 +67,7 @@ end
 ```
 Rect(vals::Number...)
 ```
-Rect constructor for indidually specified intervals.
+Rect constructor for individually specified intervals.
 e.g. Rect(0,0,1,2) has origin == Vec(0,0) and
 width == Vec(1,2)
 """