Rollup merge of #41836 - jz0425:master, r=frewsxcv

@bors: r+ 38fe8d2 rollup

1) changed "long way into" to "long way toward"
2) changed "developer lives" to "developers' lives"
3) removed the "either... or..." format from second paragraph because there are more than 2 options
4) Minor revisions to paragraphs 3-6 to make them more consistent in format and to fix minor grammar issues.

Author: frewsxcv

src/doc/rustc-ux-guidelines.md

@@ -1,14 +1,14 @@
 % Rustc UX guidelines
 
 Don't forget the user. Whether human or another program, such as an IDE, a
-good user experience with the compiler goes a long way into making developer
-lives better. We don't want users to be baffled by compiler output or
+good user experience with the compiler goes a long way toward making developers'
+lives better. We do not want users to be baffled by compiler output or
 learn arcane patterns to compile their program.
 
 ## Error, Warning, Help, Note Messages
 
-When the compiler detects a problem, it can emit either an error, warning,
-note, or help message.
+When the compiler detects a problem, it can emit one of the following: an error, a warning,
+a note, or a help message.
 
 An `error` is emitted when the compiler detects a problem that makes it unable
  to compile the program, either because the program is invalid or the
@@ -17,11 +17,11 @@ An `error` is emitted when the compiler detects a problem that makes it unable
 A `warning` is emitted when the compiler detects something odd about a
 program. For instance, dead code and unused `Result` values.
 
-A `help` is emitted following either an `error` or `warning` giving extra
+A `help` message is emitted following an `error` or `warning` to give additional
 information to the user about how to solve their problem.
 
-A `note` is for identifying additional circumstances and parts of the code
-that lead to a warning or error. For example, the borrow checker will note any
+A `note` is emitted to identify additional circumstances and parts of the code
+that caused the warning or error. For example, the borrow checker will note any
 previous conflicting borrows.
 
 * Write in plain simple English. If your message, when shown on a – possibly