Add datasheet link and fix formatting in LD2413 documentation

Author: BBart19

components/sensor/ld2413.rst

@@ -11,6 +11,8 @@ The HLK-LD2413 is a compact, high-precision 24GHz mmWave sensor with built-in AI
 
 It supports a detection range of **15 cm to 10 m** with an accuracy of **±3 mm**.
 
+You can find the full datasheet for the HLK-LD2413 sensor `here <https://drive.google.com/file/d/1S53qdURC3W6WZIjp-AEKFxvhiGx0ZdLc/view?usp=drive_link>`_.
+
 .. figure:: images/ld2413-front-back.png
     :align: center
     :width: 50.0%
@@ -97,4 +99,3 @@ See Also
 
 - :doc:`/components/sensor/index`
 - :doc:`/components/uart`
-