Minor spelling/grammar change

[evantkchong]

Just a minor change of Paremeter -> Parameter as well as it's phrasing.

---

Would also like to suggest that certain error messages can be improved somewhat.

An example would be, if incorrectly specifying the schema-field when creating a collection, we explicitly state that the format for should be <fieldName>:<dataType>:<dimOfVector/desc> like so:

milvus_cli > create collection -c book -f book_id:INT64 -f word_count:INT64 -f book_intro:FLOAT_VECTOR:2 -p book_id
Error!
Field schema should be in the `<fieldName>:<dataType>:<dimOfVector/desc>` format.

instead of

milvus_cli > create collection -c book -f book_id:INT64 -f word_count:INT64 -f book_intro:FLOAT_VECTOR:2 -p book_id
Error!
Field should contain three parameters and concat by ":".

Or at least refer users to the Milvus_CLI Command Reference for any "syntax errors"

[evantkchong]

Hey @shanghaikid, could you take a look?