update typos and bad ci

.gitlab-ci/checks.py

@@ -52,4 +52,4 @@ def file_has_sql_comments(file_path):
 
 def file_has_sqlite_commands(file_path):
   file_contents = open(file_path, "r").read()
-  return any(filter(lambda l: not l.lstrip().startswith("--"), [command in file_contents for command in sqlite_commands]))
+  return any([command in file_contents for command in sqlite_commands])

README.md

@@ -145,7 +145,7 @@ The insurance companies disclose the following statistics:
 Draw an RA Plan to answer the question above, using the schema you designed for the E/R diagram.
 Annotate each RA operator with a cardinality estimate. Include the calculation you used to compute your estimate.
 
-You may draw your E/R diagram on paper and scan it, take *quality* pictures of your drawn diagram, 
+You may draw your RA diagram on paper and scan it, take *quality* pictures of your drawn diagram, 
 or use your favorite drawing tool such as Powerpoint, Keynote, or [draw.io](https://www.draw.io/). 
 
 Name your file `hw4-ra-card.pdf`. If you choose to take a picture, please use the tool <https://imagetopdf.com> to convert your image to a pdf.