fix(curriculum): update single quote to double quotes for strings (freeCodeCamp#56992)

Author: RGHANILOO

curriculum/challenges/english/25-front-end-development/lab-pyramid-generator/66f2836c459cfb16ae76f24f.md

@@ -21,7 +21,7 @@ Fulfill the user stories below and get all the tests to pass to complete the lab
 1. Each row should start with a number of spaces sufficient to put the center character of each row in the same column.
 1. The pyramid should start and end with a newline character.
 
-For example, calling `pyramid('o', 4, false)` should give this output:
+For example, calling `pyramid("o", 4, false)` should give this output:
 
 ```js
 
@@ -46,16 +46,16 @@ Your `pyramid` function should have three parameters.
 assert.lengthOf(pyramid, 3);
 ```
 
-`pyramid('o', 4, false)` should return `"\n   o\n  ooo\n ooooo\nooooooo\n"`.
+`pyramid("o", 4, false)` should return `"\n   o\n  ooo\n ooooo\nooooooo\n"`.
 
 ```js
-assert.equal(pyramid('o', 4, false), "\n   o\n  ooo\n ooooo\nooooooo\n")
+assert.equal(pyramid("o", 4, false), "\n   o\n  ooo\n ooooo\nooooooo\n")
 ```
 
-`pyramid('p', 5, true)` should return `"\nppppppppp\p ppppppp\n  ppppp\n   ppp\n    p\n"`.
+`pyramid("p", 5, true)` should return `"\nppppppppp\p ppppppp\n  ppppp\n   ppp\n    p\n"`.
 
 ```js
-assert.equal(pyramid('p', 5, true), "\nppppppppp\n ppppppp\n  ppppp\n   ppp\n    p\n")
+assert.equal(pyramid("p", 5, true), "\nppppppppp\n ppppppp\n  ppppp\n   ppp\n    p\n")
 ```
 
 # --seed--