Reorder split names

Reorder split names in the YAML metadata to be aligned with the order in the loading script.
See: https://github.com/huggingface/datasets/issues/5258

README.md

@@ -57,12 +57,12 @@ dataset_info:
   - name: func_code_url
     dtype: string
   splits:
-  - name: test
-    num_bytes: 308626333
-    num_examples: 100529
   - name: train
     num_bytes: 5850604083
     num_examples: 1880853
+  - name: test
+    num_bytes: 308626333
+    num_examples: 100529
   - name: validation
     num_bytes: 274564382
     num_examples: 89154
@@ -93,12 +93,12 @@ dataset_info:
   - name: func_code_url
     dtype: string
   splits:
-  - name: test
-    num_bytes: 82377246
-    num_examples: 26909
   - name: train
     num_bytes: 1429272535
     num_examples: 454451
+  - name: test
+    num_bytes: 82377246
+    num_examples: 26909
   - name: validation
     num_bytes: 42358315
     num_examples: 15328
@@ -129,12 +129,12 @@ dataset_info:
   - name: func_code_url
     dtype: string
   splits:
-  - name: test
-    num_bytes: 32286998
-    num_examples: 14291
   - name: train
     num_bytes: 738153234
     num_examples: 317832
+  - name: test
+    num_bytes: 32286998
+    num_examples: 14291
   - name: validation
     num_bytes: 26888527
     num_examples: 14242
@@ -165,12 +165,12 @@ dataset_info:
   - name: func_code_url
     dtype: string
   splits:
-  - name: test
-    num_bytes: 84342064
-    num_examples: 22176
   - name: train
     num_bytes: 1559645310
     num_examples: 412178
+  - name: test
+    num_bytes: 84342064
+    num_examples: 22176
   - name: validation
     num_bytes: 92154786
     num_examples: 23107
@@ -201,12 +201,12 @@ dataset_info:
   - name: func_code_url
     dtype: string
   splits:
-  - name: test
-    num_bytes: 24056972
-    num_examples: 6483
   - name: train
     num_bytes: 480286523
     num_examples: 123889
+  - name: test
+    num_bytes: 24056972
+    num_examples: 6483
   - name: validation
     num_bytes: 30168242
     num_examples: 8253
@@ -237,12 +237,12 @@ dataset_info:
   - name: func_code_url
     dtype: string
   splits:
-  - name: test
-    num_bytes: 5359280
-    num_examples: 2279
   - name: train
     num_bytes: 110681715
     num_examples: 48791
+  - name: test
+    num_bytes: 5359280
+    num_examples: 2279
   - name: validation
     num_bytes: 4830744
     num_examples: 2209
@@ -273,12 +273,12 @@ dataset_info:
   - name: func_code_url
     dtype: string
   splits:
-  - name: test
-    num_bytes: 80203877
-    num_examples: 28391
   - name: train
     num_bytes: 1532564870
     num_examples: 523712
+  - name: test
+    num_bytes: 80203877
+    num_examples: 28391
   - name: validation
     num_bytes: 78163924
     num_examples: 26015