doc: fix package import path in sample code

fix package import path that was changed as part of v2 in sample code
snippets.

Signed-off-by: Akhil Mohan <akhilerm@gmail.com>

docs/PLUGINS.md

@@ -44,7 +44,7 @@ containerd to start and manage those containers using the runtime shim api retur
 the binary.
 
 For more details on runtimes and shims, including how to invoke and configure them,
-see the [runtime v2 documentation](../runtime/v2/README.md)
+see the [runtime v2 documentation](../core/runtime/v2/README.md)
 
 ### Proxy Plugins
 
@@ -92,7 +92,7 @@ import (
 
 	snapshotsapi "github.com/containerd/containerd/v2/api/services/snapshots/v1"
 	"github.com/containerd/containerd/v2/contrib/snapshotservice"
-	"github.com/containerd/containerd/v2/snapshots/native"
+	"github.com/containerd/containerd/v2/plugins/snapshots/native"
 )
 
 func main() {

docs/client-opts.md

@@ -65,7 +65,7 @@ If we want to make a `SpecOpt` to setup a container to monitor the host system w
 package monitor
 
 import (
-	"github.com/containerd/containerd/v2/oci"
+	"github.com/containerd/containerd/v2/pkg/oci"
 	specs "github.com/opencontainers/runtime-spec/specs-go"
 )
 

docs/getting-started.md

@@ -253,7 +253,7 @@ import (
         "log"
 
         containerd "github.com/containerd/containerd/v2/client"
-        "github.com/containerd/containerd/v2/namespaces"
+        "github.com/containerd/containerd/v2/pkg/namespaces"
 )
 
 func main() {
@@ -328,8 +328,8 @@ import (
         "log"
 
         containerd "github.com/containerd/containerd/v2/client"
-        "github.com/containerd/containerd/v2/namespaces"
-        "github.com/containerd/containerd/v2/oci"
+        "github.com/containerd/containerd/v2/pkg/namespaces"
+        "github.com/containerd/containerd/v2/pkg/oci"
 )
 
 func main() {
@@ -474,10 +474,10 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/containerd/containerd/v2/cio"
+	"github.com/containerd/containerd/v2/pkg/cio"
 	containerd "github.com/containerd/containerd/v2/client"
-	"github.com/containerd/containerd/v2/oci"
-	"github.com/containerd/containerd/v2/namespaces"
+	"github.com/containerd/containerd/v2/pkg/oci"
+	"github.com/containerd/containerd/v2/pkg/namespaces"
 )
 
 func main() {

docs/remote-snapshotter.md

@@ -45,7 +45,7 @@ These user-defined labels must be prefixed by `containerd.io/snapshot/`.
 ```go
 import (
 	containerd "github.com/containerd/containerd/v2/client"
-	"github.com/containerd/containerd/v2/snapshots"
+	"github.com/containerd/containerd/v2/core/snapshots"
 )
 
 image, err := client.Pull(ctx, ref,