samples: net: http_get: fix typo in sections names in sample.yaml

Just do: s/sample.get/sample.net/.

Signed-off-by: Marcin Niestroj <m.niestroj@emb.dev>

Author: mniestroj

samples/net/sockets/http_get/sample.yaml

@@ -30,7 +30,7 @@ tests:
       - socket
       - offload
       - simplelink
-  sample.get.sockets.http_get.nsos.http:
+  sample.net.sockets.http_get.nsos.http:
     harness: console
     harness_config:
       type: multi_line
@@ -43,7 +43,7 @@ tests:
       - native_sim
       - native_sim/native/64
     extra_args: OVERLAY_CONFIG="overlay-nsos.conf"
-  sample.get.sockets.http_get.nsos.https:
+  sample.net.sockets.http_get.nsos.https:
     harness: console
     harness_config:
       type: multi_line