chore: add dupword CI && remove repetitive words globally (celestiaor…

…g#3360)

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use https://github.com/Abirdcfly/dupword to check duplicate words

output:
```
celestia-node/share/eds/retriever_quadrant.go:71:4: Duplicate words (into) found
celestia-node/share/availability/full/reconstruction_test.go:179:2: Duplicate words (L) found
celestia-node/share/getters/getter_test.go:338:2: Duplicate words (D) found
celestia-node/share/p2p/peers/manager_test.go:86:3: Duplicate words (be) found
```

.golangci.yml

@@ -54,6 +54,7 @@ linters:
     - whitespace
     - nolintlint
     - asciicheck
+    - dupword
 
 issues:
   exclude-rules:

share/availability/full/reconstruction_test.go

@@ -164,6 +164,8 @@ func TestShareAvailable_ConnectedFullNodes(t *testing.T) {
 // connected to isolated light nodes subnetworks, which do not have enough nodes
 // to reconstruct the data, but once ShareAvailability nodes connect, they can
 // collectively reconstruct it.
+//
+//nolint:dupword
 func TestShareAvailable_DisconnectedFullNodes(t *testing.T) {
 	// S - Source
 	// L - Light Node

share/eds/retriever_quadrant.go

@@ -68,7 +68,7 @@ func newQuadrants(dah *da.DataAvailabilityHeader) []*quadrant {
 		}
 
 		for i := range quadrants {
-			// convert quadrant 1D into into 2D coordinates
+			// convert quadrant 1D into 2D coordinates
 			x, y := i%2, i/2
 			quadrants[i] = &quadrant{
 				roots:  roots[qsize*y : qsize*(y+1)],

share/getters/getter_test.go

@@ -321,6 +321,8 @@ func randomEDS(t *testing.T) (*rsmt2d.ExtendedDataSquare, *header.ExtendedHeader
 
 // randomEDSWithDoubledNamespace generates a random EDS and ensures that there are two shares in the
 // middle that share a namespace.
+//
+//nolint:dupword
 func randomEDSWithDoubledNamespace(
 	t *testing.T,
 	size int,

share/p2p/peers/manager_test.go

@@ -83,7 +83,7 @@ func TestManager(t *testing.T) {
 		manager, err := testManager(ctx, headerSub)
 		require.NoError(t, err)
 
-		// own messages should be be accepted
+		// own messages should be accepted
 		msg := newShrexSubMsg(h)
 		result := manager.Validate(ctx, manager.host.ID(), msg)
 		require.Equal(t, pubsub.ValidationAccept, result)