Updated SC2088 (markdown)

SC2088.md

@@ -1,4 +1,4 @@
-## Note that ~ doesn't expand in quotes.
+## Tilde does not expand in quotes. Use $HOME.
 
 ### Problematic code:
 
@@ -6,26 +6,13 @@
 
 ### Correct code:
 
-    rm ~/"Desktop/$filename"
+    rm "$HOME/Desktop/$filename"
 
 ### Rationale:
 
-Tilde does not expand to the user's home directory when it's double quoted. 
+Tilde does not expand to the user's home directory when it's single or double quoted. Use double quotes and `$HOME` instead.
 
-To expand it, the tilde, the optional username, and its following slash should be outside of the double quotes. 
-
-These strings expand:
-
-    ~/file                    # Correct: tilde up to the slash is unquoted (everything is)
-    ~/"$var"                  # Correct: tilde up to the slash is unquoted
-    ~user/"hello world.txt"   # Correct: tilde up to the slash is unquoted
-
-These strings do not, leaving a literal tilde:
-
-    # Fails!
-    "~/file"                  # Wrong: tilde and slash are quoted when they shouldn't be.
-    ~"/file"                  # Wrong: slash is quoted when it shouldn't be.
-    ~user"/hello world.txt"   # Wrong: slash is quoted when it shouldn't be.
+Alternatively, the `~/` can be left unquoted, as in `rm ~/"Desktop/$filename"`. 
 
 ### Exceptions