Add description to SET_PED_DENSITY_MULTIPLIER_THIS_FRAME (#927)

* Add description to SET_PED_DENSITY_MULTIPLIER_THIS_FRAME

* Update SetPedDensityMultiplierThisFrame.md

Complement the documentation with the examples provided by ahcenezdh. Thanks for the examples!

---------

Co-authored-by: ammonia-cfx <[email protected]>

PED/SetPedDensityMultiplierThisFrame.md

@@ -8,6 +8,30 @@ ns: PED
 void SET_PED_DENSITY_MULTIPLIER_THIS_FRAME(float multiplier);
 ```
 
+**Usage:** Call this native every frame
+    
 ## Parameters
-* **multiplier**: 
+* **multiplier**: Adjust from 0.0 (minimum, indicating no pedestrians in the street) to 1.0 (maximum, representing a normal amount of pedestrians on the street).
+
+## Examples
+```lua
+-- 0.0 means no peds, while 1.0 indicates the regular density of peds.
+local pedsDensityFactor = 0.0 
+
+Citizen.CreateThread(function()
+   while true do
+       SetPedDensityMultiplierThisFrame(pedsDensityFactor)
+       Citizen.Wait(0)    
+   end
+end)
+```
+
+```js
+// 0.0 means no peds, while 1.0 indicates the regular density of peds.
+const pedsDensityFactor = 0.0;
+
+setTick(() => {
+    SetPedDensityMultiplierThisFrame(pedsDensityFactor);  
+});
+```