fix typos (add missing $ in {...}).

component/openblas/buildout.cfg

@@ -31,4 +31,4 @@ make-options =
 make-targets =
   PREFIX="@@LOCATION@@" install
 environment =
-  PATH={perl:location}/bin:%(PATH)s
+  PATH=${perl:location}/bin:%(PATH)s

component/xorg/buildout.cfg

@@ -665,7 +665,7 @@ recipe = slapos.recipe.cmmi
 shared = true
 url = https://www.x.org/releases/individual/lib/libXrandr-1.5.1.tar.gz
 md5sum = 59e90a544ee8cf706cf11e3027339f60
-pkg_config_depends = ${libX11:location}/lib/pkgconfig:${xorgproto:pkg_config_depends}:${xorgproto:location}/share/pkgconfig:${libXext:location}/lib/pkgconfig:${xextproto:location}/lib/pkgconfig:${libXrender:location}/lib/pkgconfig:${renderproto:location}/lib/pkgconfig:${xorgproto:location}/share/pkgconfig:{xcbproto:location}/lib/pkgconfig:${libxcb:location}/lib/pkgconfig:${xorg-libpthread-stubs:location}/lib/pkgconfig:${libXau:location}/lib/pkgconfig
+pkg_config_depends = ${libX11:location}/lib/pkgconfig:${xorgproto:pkg_config_depends}:${xorgproto:location}/share/pkgconfig:${libXext:location}/lib/pkgconfig:${xextproto:location}/lib/pkgconfig:${libXrender:location}/lib/pkgconfig:${renderproto:location}/lib/pkgconfig:${xorgproto:location}/share/pkgconfig:${xcbproto:location}/lib/pkgconfig:${libxcb:location}/lib/pkgconfig:${xorg-libpthread-stubs:location}/lib/pkgconfig:${libXau:location}/lib/pkgconfig
 environment =
   PKG_CONFIG_PATH=${:pkg_config_depends}
   PATH=${pkgconfig:location}/bin:%(PATH)s

software/peertube/software.cfg

@@ -65,7 +65,7 @@ md5sum = 1c9639748d66e8c49fc27e4705f87622
 recipe = slapos.recipe.cmmi
 path = ${peertube:location}
 environment =
-  PATH=${unzip:location}/bin:${vim:location}/bin:${nodejs:location}/bin:${yarn:location}/bin:${python3:location}/bin:${nginx:location}/sbin:${postgresql10:location}/bin:${redis:location}/bin:{git:location}/bin:{wget:location}/bin:%(PATH)s
+  PATH=${unzip:location}/bin:${vim:location}/bin:${nodejs:location}/bin:${yarn:location}/bin:${python3:location}/bin:${nginx:location}/sbin:${postgresql10:location}/bin:${redis:location}/bin:${git:location}/bin:${wget:location}/bin:%(PATH)s
   CPPFLAGS=-I${openssl:location}/include
   LDFLAGS=-L${curl:location}/lib -Wl,-rpath -Wl,${openssl:location}/lib -Wl
 pre-configure =