update hotspot and modem firmware submodules; fix some bad commenting;

src/fw/hotspot

@@ -1 +1 @@
-Subproject commit 7840a3daf9cf8af1006e416c5b937abb860d134d
+Subproject commit 994c348129d87877be53b945e37555a618a36075

src/fw/modem

@@ -1 +1 @@
-Subproject commit b1cc331d941b90dc4628a90138531f44de1be6f7
+Subproject commit 1a31a3d568994abb2d2eed84208960cc67645c68

src/host/modem/Modem.h

@@ -552,28 +552,28 @@ namespace modem
 
         /**
          * @brief Writes DMR Slot 1 frame data to the DMR Slot 1 ring buffer.
-         * @param data Data to write to ring buffer.
+         * @param[in] data Data to write to ring buffer.
          * @param length Length of data to write.
          * @returns bool True, if data is written, otherwise false.
          */
         bool writeDMRFrame1(const uint8_t* data, uint32_t length);
         /**
          * @brief Writes DMR Slot 2 frame data to the DMR Slot 2 ring buffer.
-         * @param data Data to write to ring buffer.
+         * @param[in] data Data to write to ring buffer.
          * @param length Length of data to write.
          * @returns bool True, if data is written, otherwise false.
          */
         bool writeDMRFrame2(const uint8_t* data, uint32_t length);
         /**
          * @brief Writes P25 frame data to the P25 ring buffer.
-         * @param data Data to write to ring buffer.
+         * @param[in] data Data to write to ring buffer.
          * @param length Length of data to write.
          * @returns bool True, if data is written, otherwise false.
          */
         bool writeP25Frame(const uint8_t* data, uint32_t length);
         /**
          * @brief Writes NXDN frame data to the NXDN ring buffer.
-         * @param data Data to write to ring buffer.
+         * @param[in] data Data to write to ring buffer.
          * @param length Length of data to write.
          * @returns bool True, if data is written, otherwise false.
          */