docs(getAlpha): fix subjects

- fixed both files indentation and grammar

subjects/count-character/README.md

@@ -1,16 +1,17 @@
-## Count-Characters
+## countcharacter
 
 ### Instructions
 
-Write a function that, given a string and a character as arguments, returns an int representing the number of times the character appears in the string.
+Write a function that, given a `string` and a character as arguments, returns an `int` representing the number of times the character appears in the string.
 
-- if the character is not in the string return 0
-- if the string is empty return 0
+- If the character is not in the string return 0
+- If the string is empty return 0
 
 ### Expected Function
 
 ```go
 func CountChar(str string, c rune) int {
+
 }
 ```
 
@@ -24,14 +25,14 @@ package main
 import "fmt"
 
 func main() {
-    fmt.Println(CountChar("Hello World", 'l'))
-    fmt.Println(CountChar("5  balloons",5))
-    fmt.Println(CountChar("     ", ' ')) //The first argument contains space and tabulation.
-    fmt.Println(CountChar("The 7 deadly sins", '7'))
+	fmt.Println(piscine.CountChar("Hello World", 'l'))
+	fmt.Println(piscine.CountChar("5  balloons", 5))
+	fmt.Println(piscine.CountChar("     ", ' ')) // The first argument contains space and tabulation.
+	fmt.Println(piscine.CountChar("The 7 deadly sins", '7'))
 }
 ```
 
-And its output :
+And its output:
 
 ```console
 $ go run .

subjects/get-alpha/README.md

@@ -1,12 +1,12 @@
-# getalpha
+## getalpha
 
 ### Instructions
 
-write  a program that takes an integer [0-127] in parameter and returns the char that match the index of the integer in the ASCII table follwed by newline, follwed by newline.
+Write  a program that takes an `int` [0-127] as an argument and returns the corresponding ASCII table character, followed by newline.
 
 - If the integer above 127 or less than 0 returns newline.
 - If it's not a number returns newline.
-- If tge number of arguments above 1 return newline.
+- If the number of arguments is above 1 return newline.
 
 ### Usage