Use garbage-collected as a single word (#7857)

[ci skip]

Author: eksperimental

lib/elixir/lib/gen_server.ex

@@ -172,8 +172,8 @@ defmodule GenServer do
       registry
 
   If there is an interest to register dynamic names locally, do not use
-  atoms, as atoms are never garbage collected and therefore dynamically
-  generated atoms won't be garbage collected. For such cases, you can
+  atoms, as atoms are never garbage-collected and therefore dynamically
+  generated atoms won't be garbage-collected. For such cases, you can
   set up your own local registry by using the `Registry` module.
 
   ## Receiving "regular" messages

lib/elixir/lib/option_parser.ex

@@ -130,7 +130,7 @@ defmodule OptionParser do
   accepts only known switches and always verify their types.
 
   If you do want to parse unknown switches, remember that Elixir converts switches
-  to atoms. Since atoms are not garbage collected, OptionParser will only parse
+  to atoms. Since atoms are not garbage-collected, OptionParser will only parse
   switches that translate to atoms used by the runtime to avoid leaking atoms.
   For instance, the code below will discard the `--option-parser-example` switch
   because the `:option_parser_example` atom is never used anywhere:

lib/elixir/lib/stream.ex

@@ -976,7 +976,7 @@ defmodule Stream do
   Keep in mind that, in order to know if an element is unique
   or not, this function needs to store all unique values emitted
   by the stream. Therefore, if the stream is infinite, the number
-  of items stored will grow infinitely, never being garbage collected.
+  of items stored will grow infinitely, never being garbage-collected.
 
   ## Examples
 
@@ -1006,7 +1006,7 @@ defmodule Stream do
   Keep in mind that, in order to know if an element is unique
   or not, this function needs to store all unique values emitted
   by the stream. Therefore, if the stream is infinite, the number
-  of items stored will grow infinitely, never being garbage collected.
+  of items stored will grow infinitely, never being garbage-collected.
 
   ## Example
 

lib/elixir/lib/string.ex

@@ -2123,7 +2123,7 @@ defmodule String do
   Converts a string to an atom.
 
   Warning: this function creates atoms dynamically and atoms are
-  not garbage collected. Therefore, `string` should not be an
+  not garbage-collected. Therefore, `string` should not be an
   untrusted value, such as input received from a socket or during
   a web request. Consider using `to_existing_atom/1` instead.