fix script details

gemi/bin/gurl.py

@@ -6,7 +6,7 @@ import sys
 
 
 parser = argparse.ArgumentParser(
-	prog = __name__,
+	prog = "gurl",
 	description = "Fetch a resource at a Gemini URL",
 )
 

gemi/bin/server.py

@@ -7,8 +7,8 @@ from pathlib import Path
 
 
 parser = argparse.ArgumentParser(
-	prog = __name__,
-	description = "Fetch a resource at a Gemini URL",
+	prog = "gemi-server",
+	description = "Serve a directory",
 )
 
 parser.add_argument("-n", "--hostname"),