Update about_Hash_Tables.md

hash table->hashtable

Author: tedhudek

reference/7.5/Microsoft.PowerShell.Core/About/about_Hash_Tables.md

@@ -16,7 +16,7 @@ Describes how to create, use, and sort hashtables in PowerShell.
 ## Long description
 
 A hashtable, also known as a dictionary or associative array, is a compact data
-structure that stores one or more key-value pairs. For example, a hash table
+structure that stores one or more key-value pairs. For example, a hashtable
 might contain a series of IP addresses and computer names, where the IP
 addresses are the keys and the computer names are the values, or vice versa.
 
@@ -431,8 +431,8 @@ $now = (Get-Date)
 $hash.Add($t, $now)
 ```
 
-You can't use a subtraction operator to remove a key-value pair from a hash
-table, but you can use the `Remove()` method of the hashtable object. The
+You can't use a subtraction operator to remove a key-value pair from a hashtable,
+but you can use the `Remove()` method of the hashtable object. The
 `Remove` method has the following syntax:
 
 ```
@@ -561,8 +561,8 @@ Although you can't sort a hashtable, you can use the `GetEnumerator()` method
 of hashtables to enumerate the keys and values, and then use the `Sort-Object`
 cmdlet to sort the enumerated values for display.
 
-For example, the following commands enumerate the keys and values in the hash
-table in the `$p` variable and then sort the keys in alphabetical order.
+For example, the following commands enumerate the keys and values in the hashtable
+in the `$p` variable and then sort the keys in alphabetical order.
 
 ```powershell
 PS> $p.GetEnumerator() | Sort-Object -Property key