fix vector generation/verification scripts for IDEA

Some small style fixes on final review were not re-verified before
merge.
diff --git a/docs/development/custom-vectors/idea/generate_idea.py b/docs/development/custom-vectors/idea/generate_idea.py
index 544d7ea..70b9f87 100644
--- a/docs/development/custom-vectors/idea/generate_idea.py
+++ b/docs/development/custom-vectors/idea/generate_idea.py
@@ -18,7 +18,7 @@
 
 def build_vectors(mode, filename):
     with open(filename, "r") as f:
-        vector_file = f.read()
+        vector_file = f.read().splitlines()
 
     count = 0
     output = []
diff --git a/docs/development/custom-vectors/idea/verify_idea.py b/docs/development/custom-vectors/idea/verify_idea.py
index f7e2276..89713c8 100644
--- a/docs/development/custom-vectors/idea/verify_idea.py
+++ b/docs/development/custom-vectors/idea/verify_idea.py
@@ -18,7 +18,7 @@
 
 def verify_vectors(mode, filename):
     with open(filename, "r") as f:
-        vector_file = f.read()
+        vector_file = f.read().splitlines()
 
     vectors = load_nist_vectors(vector_file)
     for vector in vectors: