docs: fix various typos

Found via `codespell -q 3 -S "./docs/static,./fs/rc/params_test.go" -L aadd,afile,alledges,bbefore,bu,buda,copys,couldn,crashers,crypted,ddelete,deriver,failre,goup,hashin,hel,inbraces,keep-alives,ket,medias,ment,mis,nd,nin,notin,ois,ot,parth,re-use,re-using,responser,rin,sav,splited,streamin,synching,te,twoo,ue,unknwon,wasn`

Author: luzpaz

backend/iclouddrive/api/drive.go

@@ -476,7 +476,7 @@ func (d *DriveService) MoveItemByDriveID(ctx context.Context, id, etag, dstID st
 
 // CopyDocByItemID copies a document by its item ID.
 func (d *DriveService) CopyDocByItemID(ctx context.Context, itemID string) (*DriveItemRaw, *http.Response, error) {
-	// putting name in info doesnt work. extension does work so assume this is a bug in the endpoint
+	// putting name in info doesn't work. extension does work so assume this is a bug in the endpoint
 	values := map[string]any{
 		"info_to_update": map[string]any{},
 	}

backend/s3/ibm_signer.go

@@ -40,7 +40,7 @@ func (signer *IbmIamSigner) SignHTTP(ctx context.Context, credentials aws.Creden
 	return nil
 }
 
-// NoOpCredentialsProvider is needed since S3 SDK requires having credentials, eventhough authentication is happening via IBM IAM.
+// NoOpCredentialsProvider is needed since S3 SDK requires having credentials, even though authentication is happening via IBM IAM.
 type NoOpCredentialsProvider struct{}
 
 // Retrieve returns mock credentials for the NoOpCredentialsProvider.