scripts: Rename "adt-install" to "adt-installer" in user help.

(From OE-Core rev: 2d97f7e92d1dca3d381f65aeac6904a158d8826c)

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/oe-setup-builddir

@@ -118,7 +118,7 @@ Common targets are:
     core-image-sato
     meta-toolchain
     meta-toolchain-sdk
-    adt-install
+    adt-installer
     meta-ide-support
 
 You can also run generated qemu images with a command like 'runqemu qemux86'