chore: apply upstream doc/build fixes and clean patch artifacts

Author: Shaun Prince

CONTRIBUTING.md

@@ -50,7 +50,7 @@ request on the repo and our GitHub Actions CI will run ShellCheck for you.
 - Don’t use `sed`.
     - Use `bash`'s built-in [parameter expansion](http://wiki.bash-hackers.org/syntax/pe).
 - Don’t use `cat`.
-    - Use `bash`'s built-in syntax (`file="$(< /path/to/file.txt)")`).
+    - Use `bash`'s built-in syntax (`file="$(< /path/to/file.txt)"`).
 - Don’t use `grep "pattern" | awk '{ printf }'`.
     - Use `awk '/pattern/ { printf }'`
 - Don’t use `wc`.

Makefile

@@ -2,7 +2,7 @@ PREFIX = /usr
 MANDIR = $(PREFIX)/share/man
 
 all:
-	@echo Run \'make install\' to install Neofetch.
+	@printf "Run 'make install' to install Neofetch.\n"
 
 install:
 	@mkdir -p $(DESTDIR)$(PREFIX)/bin