fix a typo in gbuild help and improve a autoconf error message

Change-Id: Iaee342ae6d612e35d1d2dfa91edbc952d4f73b4e
Reviewed-on: https://gerrit.libreoffice.org/11616Reviewed-by: Matúš Kukan <matus.kukan@collabora.com>
Tested-by: Matúš Kukan <matus.kukan@collabora.com>

configure.ac

@@ -9680,7 +9680,7 @@ dnl Checking for patch
 dnl ***************************************
 AC_PATH_PROG(PATCH, patch)
 if test -z "$PATCH"; then
-    AC_MSG_ERROR([\"patch\" not found in \$PATH, install it])
+    AC_MSG_ERROR(["patch" not found in \$PATH, install it])
 fi
 
 dnl On Solaris, FreeBSD or MacOS X, check if --with-gnu-patch was used

solenv/gbuild/gbuild.help.txt

@@ -123,6 +123,6 @@ INTERACTIVE VARIABLES:
        gb_FULLDEPS     Generate and use dependencies (on by default, handle with care).
        gb_COLOR        Use ASCII color output.
        gb_TITLES       Show progress in terminal title.
-       gb_Side         Either "host" of "build" (default to "host").
+       gb_Side         Either "host" or "build" (default to "host").
                        determine if config_host.mk or config_build.mk is used to
                        set the build environment.