Update wording of index.md (#19559)

Inserted missing words in the article and comments
Updated the capitalization of True and False where necessary to maintain consistency with Python syntax

guide/english/python/if-elif-else-statements/index.md

@@ -1,10 +1,10 @@
 ---
-title: If Elif Else Statements
+title: If / Elif / Else Statements
 ---
 
-## If Elif Else Statements
+## If / Elif / Else Statements
 
-The `if`/`elif`/`else` structure is a common way to control the flow of a program, allowing you to execute specific blocks of code depending on the value of some data. If the condition following the keyword `if` evaluates as `true`, the block of code will execute:
+The `if`/`elif`/`else` structure is a common way to control the flow of a program, allowing you to execute specific blocks of code depending on the value of some data. If the condition following the keyword `if` evaluates as `True`, the block of code will execute:
 Note that parenthesis is not used before and after the condition check as in other languages.
 ```python
 if True:
@@ -17,15 +17,15 @@ x = 5
 if x > 4:
   print("The condition was true!") #this statement executes
 ```
-> **Tips** : You can use **1** as alternative to **True** and **0** as alternative to **False**
+> **Tips** : You can use **1** as alternative to **True** and **0** as an alternative to **False**
 
 _Example_:
 ```python
-if 1:   #true
+if 1:   # 1 evaluates to true
   print('If block will execute!')
  ```
 
-You can optionally add an `else` response that will execute if the condition is `false`:
+You can optionally add an `else` response that will execute if the condition is `False`:
 ```python
 if not True:
   print('If statement will execute!')
@@ -42,7 +42,7 @@ else:
   print("The condition wasn't true!") #this statement executes
 ```
 
-*Note that there is no condition following the `else` keyword - it catches all situations where the condition was `false`*
+*Note that there is no condition following the `else` keyword - it catches all situations where the condition was `False`*
 
 Multiple conditions can be checked by including one or more `elif` checks after your initial `if` statement but only one condition will execute:
 
@@ -59,9 +59,9 @@ else:
   print("Neither will I!") #this statement does not execute
 ```
 
-*Note only the first condition that evaluates as `true` will execute. Even though `z > 6` is `true`, the `if/elif/else` block terminates after the first true condition. This means that an `else` will only execute if none of the conditions were `true`.*
+*Note only the first condition that evaluates as `True` will execute. Even though `z > 6` is `True`, the `if/elif/else` block terminates after the first true condition. This means that an `else` will only execute if none of the conditions were `True`.*
 
-We can also create nested if's for decision making. Before preceding please refer to the <a href='https://guide.freecodecamp.org/python/code-blocks-and-indentation' target='_blank' rel='nofollow'>indentation guide once</a> before preceding. 
+We can also create nested if statements for decision making. Before preceding please refer to the <a href='https://guide.freecodecamp.org/python/code-blocks-and-indentation' target='_blank' rel='nofollow'>indentation guide once</a> before preceding. 
 
 Let's take an example of finding a number which is even and also greater than '10':
 ```
@@ -71,18 +71,18 @@ if x %  2 == 0:  # this is how you create a comment and now, checking for even.
   if x > 10:
     print("This number is even and is greater than 10")
   else:
-    print("This number is even, but not greater 10")
+    print("This number is even, but not greater than 10")
 else:
   print ("The number is not even. So point checking further.")
 ```
-This was just a simple example for nested if's. Please feel free to explore more online.
+This was just a simple example for nested if statement. Please feel free to explore more online.
 
 While the examples above are simple, you can create complex conditions using <a href='https://guide.freecodecamp.org/python/comparisons' target='_blank' rel='nofollow'>boolean comparisons</a> and <a href='https://guide.freecodecamp.org/python/boolean-operations' target='_blank' rel='nofollow'>boolean operators</a>.
 
 
 ***Inline python if-else statement***
 
-We can also use if-else statements inline python functions
+We can also use if-else statements with inline python functions
 The following example should check if the number is greater or equal than 50, if yes return True:
 
 ```