Fix typos

Author: rex4539

Documentation/Index.md

@@ -691,7 +691,7 @@ do {
 }
 ```
 
-Multiple rows can be inserted at once by similarily calling `insertMany` with an array of
+Multiple rows can be inserted at once by similarly calling `insertMany` with an array of
 per-row [setters](#setters).
 
 ```swift

SQLite.playground/Contents.swift

@@ -65,7 +65,7 @@ do {
     // Handle error
 }
 
-/// define a virtual tabe for the FTS index
+/// define a virtual table for the FTS index
 let emails = VirtualTable("emails")
 
 let subject = Expression<String>("subject")

Sources/SQLite/Extensions/Cipher.swift

@@ -93,7 +93,7 @@ extension Connection {
             // per recommendation of SQLCipher authors
             let migrateResult = try scalar("PRAGMA cipher_migrate;")
             if (migrateResult as? String) != "0" {
-                // "0" is the result of successfull migration
+                // "0" is the result of successful migration
                 throw Result.error(message: "Error in cipher migration, result \(migrateResult.debugDescription)", code: 1, statement: nil)
             }
         }