python-cython: fix check-package warnings

Fixes:

package/python-cython/Config.in.host:2: should be indented with one tab (http://nightly.buildroot.org/#_config_files)
package/python-cython/Config.in.host:3: should be indented with one tab (http://nightly.buildroot.org/#_config_files)
package/python-cython/Config.in.host:4: help text: <tab><2 spaces><62 chars> (http://nightly.buildroot.org/#writing-rules-config-in)
package/python-cython/Config.in.host:5: help text: <tab><2 spaces><62 chars> (http://nightly.buildroot.org/#writing-rules-config-in)

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/python-cython/Config.in.host

@@ -1,7 +1,7 @@
 config BR2_PACKAGE_HOST_PYTHON_CYTHON
-       bool "host python-cython"
-       help
-         The Cython compiler for writing C extensions for the Python
-         language.
+	bool "host python-cython"
+	help
+	  The Cython compiler for writing C extensions for the Python
+	  language.
 
-         http://cython.org/
+	  http://cython.org/