Fix heading levels in Locations docs to be consistent

docs/api/locations.md

@@ -6,7 +6,9 @@ The `Location` interface is a union of the ways to refer to a specific location
 type Location = Path | Point | Range
 ```
 
-## Static methods
+## Location
+
+### Static methods
 
 ###### `Location.isLocation(value: any): value is Location`
 
@@ -32,7 +34,7 @@ interface Point {
 }
 ```
 
-## Static methods
+### Static methods
 
 ###### `Point.compare(point: Point, another: Point): -1 | 0 | 1`
 
@@ -72,6 +74,8 @@ interface Range {
 }
 ```
 
+### Static methods
+
 ###### `Range.edges(range: Range, options?): [Point, Point]`
 
 Get the start and end points of a `range`, in the order in which they appear in the document.

docs/api/nodes.md

@@ -1,4 +1,4 @@
-# Node (Editor, Element, Text)
+# Nodes
 
 The `Node` union type represents all of the different types of nodes that occur in a Slate document tree.