fix tests

docs/nerfology/methods/cleanerf.md

@@ -0,0 +1,14 @@
+# CleaNeRF
+ 
+### Running the Method
+ 
+```bash
+pip install cleanerf
+ns-train cleanerf --help
+```
+ 
+## Method
+ 
+### Overview
+
+TODO

docs/nerfology/methods/index.md

@@ -31,4 +31,5 @@ In addition to their implementations, we have provided guides that walk through
     Nerfacto<nerfacto.md>
     Instant-NGP<instant_ngp.md>
     Semantic NeRF-W<semantic_nerfw.md>
+    CleaNeRF<cleanerf.md>
 ```