package/package_infineon_index.template.json: Change packager name.

Signed-off-by: zhanglinjing <Linjing.Zhang@infineon.com>

Author: LinjingZhang

package/package_infineon_index.template.json

@@ -49,7 +49,7 @@
                     ],
                     "toolsDependencies": [
                         {
-                            "packager": "Infineon",
+                            "packager": "infineon",
                             "name": "arm-none-eabi-gcc",
                             "version": "10.3-2021.10"
                         }