Fixed typos

Author: Dean Wampler

src/main/scala/progscala3/meta/Invariant1.scala

@@ -6,7 +6,7 @@ object invariant1:
 
   /**
    * Throw an exception if the predicate is false before the block is
-   * evaluatad, then evaluate the block, then check the predicate again.
+   * evaluated, then evaluate the block, then check the predicate again.
    * If all predicate checks pass, then return the block's value.
    */
   inline def apply[T](                                          // <2>

src/script/scala/progscala3/contexts/GivenImports.scala

@@ -13,7 +13,7 @@ object O1:
 // tag::imports[]
 import O1.*             // Import everything EXCEPT the givens, c1 and c2
 import O1.given         // Import ONLY the givens (of type C1 and C2)
-import O1.{given, *}    // Import everything, givens and non-givens in O1
+import O1.{given, *}    // Import everything, givens and nongivens in O1
 import O1.{given C1}    // Import just the given of type C1
 import O1.c2            // Import just the given c2 of type C2
 // end::imports[]