docs: Update title.

docs/models-accuracy.md

@@ -1,4 +1,4 @@
-# Model Definitions
+# Models and Accuracies
 Model definitions should be kept in [models/openface](https://github.com/cmusatyalab/openface/blob/master/models/openface),
 where we have provided definitions of the [nn2](https://github.com/cmusatyalab/openface/blob/master/models/openface/nn2.def.lua)
 and [nn4](https://github.com/cmusatyalab/openface/blob/master/models/openface/nn4.def.lua) as described in the FaceNet paper,

mkdocs.yml

@@ -19,7 +19,7 @@ pages:
   - Setup: setup.md
   - FAQ: faq.md
 - DNN Models:
-  - Pre-Trained Models and Accuracy: models-accuracy.md
+  - Pre-Trained Models and Accuracies: models-accuracy.md
   - Training a DNN Model: training-new-models.md
   - Visualizations: visualizations.md
 - Release Notes: release-notes.md