Add newline at end-of-file

... for the few files that didn't already have it.

Author: jmdyck

docs/19-compiled-programs.md

@@ -248,4 +248,4 @@ used immediately, and the fixups are completely ignored. If a
 pure-code file for this release doesn't exist, the fixup file is used
 to create a new copy of the file from an old one, and also a new
 version of the fixup file is created to go with the new pure-code
-file. This all goes on automatically behind the user's back.
+file. This all goes on automatically behind the user's back.

docs/20-coroutines.md

@@ -348,4 +348,4 @@ different `TYPE`s with similar properties.
 3. Bugs in multi-`PROCESS` programs usually exhibit a degree of
 subtlety and nastiness otherwise unknown to the human mind. If when
 attempting to work with multiple processes you begin to feel that you
-are rapidly going insane, you are in good company.
+are rapidly going insane, you are in good company.

docs/21-interrupts.md

@@ -716,4 +716,4 @@ it as a value. If *pred* is not given, there had better be a named
 
 suspends execution, interruptibly, without consuming any CPU time,
 for *time* seconds, where *time* is non-negative, and then returns
-`T`. *pred* is the same as for `HANG`.
+`T`. *pred* is the same as for `HANG`.

docs/22-storage-management.md

@@ -370,4 +370,4 @@ collection that results in all the arguments becoming pure and
 sharable, and ignored afterward by the garbage collector. No argument
 can live on the control stack or be of `PRIMTYPE` `PROCESS` or `LOCD`
 or `ASOC`. Sharing between operating-system processes actually occurs
-after a `SAVE`, if and when the `SAVE` file is `RESTORE`d.
+after a `SAVE`, if and when the `SAVE` file is `RESTORE`d.

docs/23-mdl-as-a-system-process.md

@@ -134,4 +134,4 @@ MDL is initially listening as `<UNAME>` `<JNAME>` with the built-in
 
 signals to ITS (directly, not via the IPC device) that the daemon
 named by its argument should run now. It returns `T` if the daemon
-exists, `#FALSE ()` otherwise.
+exists, `#FALSE ()` otherwise.

docs/24-efficiency-and-tastefulness.md

@@ -299,4 +299,4 @@ looks better than
 ```
 
 You can see the nature of the choices. Nesting is still and all
-better than `GO`.
+better than `GO`.