all: fix typos in comments (#20963)

examples/gg/path_finding_algorithm_visualizer/README.md

@@ -24,7 +24,7 @@ $ ./aStar
 # Demo 
 ![Demo image of the algorithm](screenshot.png)
 
-# 🔴🔴🔴🔴 Area of improvments 🔴🔴🔴🔴🔴
+# 🔴🔴🔴🔴 Area of improvements 🔴🔴🔴🔴🔴
 
 - 🚧 Under Construction: We are using heap, but that is not correctly
 implemented, since instead of O(log(n)) it takes O(n). For that reason,

examples/gg/path_finding_algorithm_visualizer/aStar.v

@@ -86,7 +86,7 @@ fn main() {
 		init_fn: init_images // run at start of application
 		user_data: app // store user data
 	)
-	mut grid := initialise_grid() // initialize the grid varibale and populate the matrix with each cell as empty
+	mut grid := initialise_grid() // initialize the grid variable and populate the matrix with each cell as empty
 	app.grid = grid // set grid to app attribute so you can access it by just passing app variable or with method of app
 	app.ui.dpi_scale = 1.0 // set scale this is use to make it responsive
 	app.start = &Point{ // set start point to -1, -1