add evaluation

Author: lhoestq

docs/source/repository_structure.mdx

@@ -94,7 +94,7 @@ In particular, these keywords are equivalent:
 
 - train, training
 - validation, valid, dev
-- test, testing, eval
+- test, testing, eval, evaluation
 
 Therefore this is also a valid repository:
 

src/datasets/data_files.py

@@ -35,6 +35,8 @@ class Url(str):
         "testing[-._ ]*",
         "**[-._ /]eval[-._ ]*",
         "eval[-._ ]*",
+        "**[-._ /]evaluation[-._ ]*",
+        "evaluation[-._ ]*",
     ],
     str(Split.VALIDATION): [
         "**[-._ /]dev[-._ ]*",
@@ -55,6 +57,8 @@ class Url(str):
         "**[-._ /]testing[-._ /]**",
         "eval[-._ /]**",
         "**[-._ /]eval[-._ /]**",
+        "evaluation[-._ /]**",
+        "**[-._ /]evaluation[-._ /]**",
     ],
     str(Split.VALIDATION): [
         "dev[-._ /]**",