moving around files (#616)

moved around files

docs/reference/api/utils/colormaps.rst

@@ -0,0 +1,8 @@
+.. _colormaps:
+
+Colormaps
+----------------
+
+.. automodule:: nerfstudio.utils.colormaps
+   :members:
+   :show-inheritance:

docs/reference/api/utils/index.rst

@@ -7,5 +7,5 @@ Utils
 
    colors
    math
-   visualization
+   colormaps
    tensor_dataclass

docs/reference/api/utils/visualization.rst

@@ -1,8 +0,0 @@
-.. _visualization:
-
-Visualization
-----------------
-
-.. automodule:: nerfstudio.utils.visualization
-   :members:
-   :show-inheritance: