Typo Fixes in Intro

[evan-wang-13]

Type of PR: Typo Fixes
NetID: ew447

• In the psuedocode for rule-based classification, I believe there is an extra comma after the elif statement. I understand this is pseudocode so exact correctness isn't necessary, but I think this syntax error could cause some confusion
• In the discussion of executable course materials, I believe "an" is a typo. I think the sentence would make more sense if "an" was switched to "and". If the intent was to have "an" precede a noun phrase, a different grammatically correct sentence could be "We are going to embed executable code directly in the slides and use that to demonstrate algorithms"

[shachideshpande]

The pseudocode comma is not customary to write after an elif statement. Conventionally, zif/elif statements are followed by a colon. Hence, this cannot be changed.

The other suggestion on 'an'->'and' can be incorporated.

[evan-wang-13]

The pseudocode comma is not customary to write after an elif statement. Conventionally, zif/elif statements are followed by a colon. Hence, this cannot be changed.

The other suggestion on 'an'->'and' can be incorporated.

I agree that the comma is not customary to write after an elif statement. The change I am proposing is to remove the comma that is in the current pseudocode.

This snippet above shows what is on the current website. I am proposing to just have the colon, removing the extra comma.

[shachideshpande]

Thanks for the clarification. I read it the other way round accidentally. I am approving your PR.

[shachideshpande]

Two minor typos were approved. Thank you!