Fix some typos pointed out by @leonerd, thanks!

Author: nicomen

rfcs/rfc0015.md

@@ -16,8 +16,7 @@ Remove support for ' (apostrophe) as package namespace separator.
 * Removal of ambiguous syntax that complicates parsing and confuses users.
 
 From perldoc perlmod
-
-```The old package delimiter was a single quote, but double colon is now the preferred delimiter, in part because it's more readable to humans, and in part because it's more readable to emacs macros. It also makes C++ programmers feel like they know what's going on--as opposed to using the single quote as separator, which was there to make Ada programmers feel like they knew what was going on. Because the old-fashioned syntax is still supported for backwards compatibility, if you try to use a string like "This is $owner's house", you'll be accessing $owner::s; that is, the $s variable in package owner, which is probably not what you meant. Use braces to disambiguate, as in "This is ${owner}'s house".```
+> The old package delimiter was a single quote, but double colon is now the preferred delimiter, in part because it's more readable to humans, and in part because it's more readable to emacs macros. It also makes C++ programmers feel like they know what's going on--as opposed to using the single quote as separator, which was there to make Ada programmers feel like they knew what was going on. Because the old-fashioned syntax is still supported for backwards compatibility, if you try to use a string like `"This is $owner's house"`, you'll be accessing `$owner::s`; that is, the `$s` variable in package owner, which is probably not what you meant. Use braces to disambiguate, as in `"This is ${owner}'s house"`.
 
 ## Rationale
 
@@ -52,7 +51,7 @@ There are a few alternatives on how to disable this feature and changing the mea
 
 All of the above may be turned on or off using compiler flags, pragmas or extending warning::syntax
 
-The current patch that I made some years ago is mostly like: `1 + b` but cold turkey remocing as much as possible without any flags or switches.
+The current patch that I made some years ago is mostly like: `1 + b` but cold turkey removing as much as possible without any flags or switches.
 
 I think `2 + a` would be an interesting approach to keep backwards-compatibility somewhat.