docs(tt_um_gray_sobel): update info.md (#538)

projects/tt_um_gray_sobel/docs/info.md

@@ -13,32 +13,29 @@ This project performs grayscale conversion and Sobel filtering with the aim of d
 
 Below is a block diagram of the implementation:
 
-<p align="center">
-    <img src=./arch.png alt="Descripción" width="410" height="270">
-</p>
-
+![arc](arch.png)
 
 ## How to test
 
 It is necessary for the pixels to be sent via an SPI protocol; for this purpose, the input ```ui_in[2:0]``` is designated as follows:
 
-* ```ui_in[0]``` ----> SPI Clock
-* ```ui_in[1]``` ----> Chip Select
-* ```ui_in[2]``` ----> Input Pixel
+* ```ui_in[0]``` &rarr; SPI Clock
+* ```ui_in[1]``` &rarr; Chip Select
+* ```ui_in[2]``` &rarr; Input Pixel
 
 As shown in the previous image, there are some processing options:
 
-1. Bypass ----> Returns the input pixel unprocessed.
-2. Grayscale ----> Returns the pixel converted to grayscale, so it is recommended that the input pixel be RGB.
-3. Sobel ----> Returns the edge detection corresponding to the input pixel, so it is recommended that the input pixel be grayscale.
-4. Grayscale + Sobel ----> Returns the edge detection of the input pixel by performing both grayscale processing and the Sobel filter, so it is recommended that the input pixel be  RGB.
+1. Bypass &rarr; Returns the input pixel unprocessed.
+2. Grayscale &rarr; Returns the pixel converted to grayscale, so it is recommended that the input pixel be RGB.
+3. Sobel &rarr; Returns the edge detection corresponding to the input pixel, so it is recommended that the input pixel be grayscale.
+4. Grayscale + Sobel &rarr; Returns the edge detection of the input pixel by performing both grayscale processing and the Sobel filter, so it is recommended that the input pixel be  RGB.
 
 To select one of the processing options, the input ```ui_in[4:3]``` is designated as follows:
 
-* ```ui_in[4:3]``` = $00$ ----> Grayscale + Sobel 
-* ```ui_in[4:3]``` = $01$ ----> Sobel
-* ```ui_in[4:3]``` = $10$ ----> Grayscale
-* ```ui_in[4:3]``` = $11$ ----> Bypass
+* ```ui_in[4:3]``` = $00$ &rarr; Grayscale + Sobel 
+* ```ui_in[4:3]``` = $01$ &rarr; Sobel
+* ```ui_in[4:3]``` = $10$ &rarr; Grayscale
+* ```ui_in[4:3]``` = $11$ &rarr; Bypass
 
 To perform the Sobel filter processing, it must be enabled according to the selected processing. This can be enabled or disabled as needed through the input ```ui_in[5]```, where $1$ enables and $0$ disables.