Update bench to empymod-bench

Author: prisae

asv.conf.json

@@ -101,7 +101,7 @@
 
     // The directory (relative to the current directory) that raw benchmark
     // results are stored in.  If not provided, defaults to "results".
-    "results_dir": "../bench/results",
+    "results_dir": "../empymod-bench/results",
 
     // The directory (relative to the current directory) that the html tree
     // should be written to.  If not provided, defaults to "html".