README.md: update instruction to run tests

Reflecting what Travis does.
sipa · Jul 19, 2019 · ce6d438 · ce6d438
1 parent fa33017
commit ce6d438
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -59,5 +59,5 @@ libsecp256k1 is built using autotools:
     $ ./autogen.sh
     $ ./configure
     $ make
-    $ ./tests
+    $ make check
     $ sudo make install  # optional