Fix math object clash;

api/lovr/math/mat4.lua

@@ -1,5 +1,5 @@
 return {
-  summary = 'Create a new `mat4`.',
+  summary = 'Create a new mat4.',
   description = [[
     Creates a new `mat4`.
 

api/lovr/math/quat.lua

@@ -1,5 +1,5 @@
 return {
-  summary = 'Create a new `quat`.',
+  summary = 'Create a new quat.',
   description = [[
     Creates a new `quat`.  Have a look at `quat:set` for more information about how all these
     variants can be used.

api/lovr/math/vec3.lua

@@ -1,5 +1,5 @@
 return {
-  summary = 'Create a new `vec3`.',
+  summary = 'Create a new vec3.',
   description = [[
     Creates a new `vec3`.
 

api/main.lua

@@ -159,7 +159,7 @@ local function processFunction(path, parent)
 end
 
 local function processObject(path, parent)
-  local object = require(path)
+  local object = require(path .. '.init')
 
   object.key = path:match('[^/]+$')
   object.name = object.key