update .winner.json

We used:

```sh
./run_all.sh ./gen_winner_json.sh
```

to update `.winner.json` files due to recent changes
made to `manifest.csv`.

2006/grothe/.winner.json

@@ -60,7 +60,7 @@
 	    "winners_text" : "sample input"
 	},
 	{
-	    "file_path" : "olympic.txt",
+	    "file_path" : "olympics.txt",
 	    "winners_rank" : 100,
 	    "created_by" : null,
 	    "prog" : null,
@@ -102,7 +102,7 @@
 	{
 	    "file_path" : "inventory.html",
 	    "winners_rank" : 900,
-	    "created_by" : "winner2nventory",
+	    "created_by" : "winner2inventory",
 	    "prog" : null,
 	    "filetype" : "html",
 	    "winners_show" : true,

2006/grothe/inventory.html

@@ -224,7 +224,7 @@ href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2006/grothe/arabi
 <tr class="even">
 <td style="text-align: left;">sample input</td>
 <td style="text-align: left;"><a
-href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2006/grothe/olympic.txt">olympic.txt</a></td>
+href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2006/grothe/olympics.txt">olympics.txt</a></td>
 </tr>
 <tr class="odd">
 <td style="text-align: left;">sample input</td>