uwb: Change readme.txt to README.md

Bug: 197886322
Test: Compiles
Change-Id: I30c0c6c3a0d807130f574d4d59aba89d3ffabea4
diff --git a/uwb/aidl/android/hardware/uwb/fira_android/readme.txt b/uwb/aidl/android/hardware/uwb/fira_android/README.md
similarity index 68%
rename from uwb/aidl/android/hardware/uwb/fira_android/readme.txt
rename to uwb/aidl/android/hardware/uwb/fira_android/README.md
index 6195427..e658d93 100644
--- a/uwb/aidl/android/hardware/uwb/fira_android/readme.txt
+++ b/uwb/aidl/android/hardware/uwb/fira_android/README.md
@@ -1,4 +1,4 @@
-The android.hardware.uwb.fira_android package is used to add any Android specific
+The `android.hardware.uwb.fira_android` package is used to add any Android specific
 additions to the UCI specification defined by FIRA standards body. These
 additions should be added to the vendor specific portions carved out in the UCI
 specification.
@@ -8,6 +8,8 @@
  - Andriod specific params in an existing UCI specified command/response/notification.
 
 All other interactions sent/received over the HAL interface is expected to
-comply with the UCI specification that can be found here:
-https://groups.firaconsortium.org/wg/Technical/document/folder/127
-(TODO(b/196004116): Link to the published specification)
+comply with the UCI specification that can be found [here](
+https://groups.firaconsortium.org/wg/Technical/document/folder/127).
+
+TODO([b/196004116](b/196004116)): Link to the published specification.
+