lnrpc: fix lncli documentation tags in walletkit.proto

Fixes the tag for `wallet pendingsweeps` and adds the tag for
`wallet estimatefeerate`.

lnrpc/walletrpc/walletkit.swagger.json

@@ -306,7 +306,7 @@
     },
     "/v2/wallet/estimatefee/{conf_target}": {
       "get": {
-        "summary": "EstimateFee attempts to query the internal fee estimator of the wallet to\ndetermine the fee (in sat/kw) to attach to a transaction in order to\nachieve the confirmation target.",
+        "summary": "lncli: `wallet estimatefeerate`\nEstimateFee attempts to query the internal fee estimator of the wallet to\ndetermine the fee (in sat/kw) to attach to a transaction in order to\nachieve the confirmation target.",
         "operationId": "WalletKit_EstimateFee",
         "responses": {
           "200": {
@@ -680,7 +680,7 @@
     },
     "/v2/wallet/sweeps/pending": {
       "get": {
-        "summary": "lncli: `pendingsweeps`\nPendingSweeps returns lists of on-chain outputs that lnd is currently\nattempting to sweep within its central batching engine. Outputs with similar\nfee rates are batched together in order to sweep them within a single\ntransaction.",
+        "summary": "lncli: `wallet pendingsweeps`\nPendingSweeps returns lists of on-chain outputs that lnd is currently\nattempting to sweep within its central batching engine. Outputs with similar\nfee rates are batched together in order to sweep them within a single\ntransaction.",
         "description": "NOTE: Some of the fields within PendingSweepsRequest are not guaranteed to\nremain supported. This is an advanced API that depends on the internals of\nthe UtxoSweeper, so things may change.",
         "operationId": "WalletKit_PendingSweeps",
         "responses": {