fix: fix typo in examples

exl/01_conditions.fzs

@@ -1,5 +1,5 @@
 // When you need to check some value
-//  a conditional statements might help you
+//  a conditional statement might help you
 
 int valueToCheck = 2 + 2;
 if (valueToCheck == 4)
@@ -7,7 +7,7 @@ if (valueToCheck == 4)
   printline("Yay! 2 + 2 = 4");
 }
 
-// Conditional statement uses condition in pairs
+// Conditional statement uses condition in parenthesis
 //  after `if` keyword and executes command(s) after
 //  if condition turns out to be true
 
@@ -21,7 +21,7 @@ if (age <= 20)
 else
 {
   age = 20;
-  printline("You looks too young!");
+  printline("You look too young!");
 }
 
 // NOTE: If you need to execute only one statement