doc: Suggest running ./configure.

Signed-off-by: Simon Josefsson <simon@josefsson.org>
diff --git a/README.md b/README.md
index 45eb1e8..20abcf2 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@
 Then build the project normally:
 
 ```
-$ make
+$ ./configure
 $ make check
 ```