diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..fed78af
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+package*json
diff --git a/specs/bellatrix/builder.md b/specs/bellatrix/builder.md
index c832f91..241fc2a 100644
--- a/specs/bellatrix/builder.md
+++ b/specs/bellatrix/builder.md
@@ -146,7 +146,7 @@ class SignedBlindedBeaconBlock(Container):
 All signature operations should follow the [standard BLS operations][bls]
 interface defined in `consensus-specs`.
 
-To assist in signing, we use a function from the [consensus specs][consensus-specs]: 
+To assist in signing, we use a function from the [consensus specs][consensus-specs]:
 [`compute_domain`][compute-domain]
 
 There are two types of data to sign over in the Builder API: