Two minor docs fixes (#1257)

* chore(docs): fix isActive condition in Stepper example

* chore(docs): fix syntax in template example

Author: alessbell

docs/api-reference.md

@@ -126,15 +126,15 @@ For instance, suppose we render a slide like this:
   <Stepper tagName="p" alwaysVisible values={['foo', 'bar']}>
     {(value, step, isActive) =>
       isActive
-        ? `The first stepper is not active. Step: ${step} Value: ${value}`
-        : `The first stepper is active. Step: ${step} Value: ${value}`
+        ? `The first stepper is active. Step: ${step} Value: ${value}`
+        : `The first stepper is not active. Step: ${step} Value: ${value}`
     }
   </Stepper>
   <Stepper tagName="p" alwaysVisible values={['baz', 'quux']}>
     {(value, step, isActive) =>
       isActive
-        ? `The second stepper is not active. Step: ${step} Value: ${value}`
-        : `The second stepper is active. Step: ${step} Value: ${value}`
+        ? `The second stepper is active. Step: ${step} Value: ${value}`
+        : `The second stepper is not active. Step: ${step} Value: ${value}`
     }
   </Stepper>
 </Slide>

docs/themes.md

@@ -70,7 +70,7 @@ Additionally, there are keys for assorted overrides for the presentation:
 A template in Spectacle is a fixed overlay of components that are presented on every slide. They are similar to masters in Keynote or PowerPoint. It’s a function prop that has a single optional config object containing the current slide and total slide count and returns a React Node.
 
 ```jsx
-<Deck template=(({ slideNumber, numberOfSlides }) => (
+<Deck template={({ slideNumber, numberOfSlides }) => (
   <FlexBox
     justifyContent="space-between"
     position="absolute"
@@ -85,7 +85,7 @@ A template in Spectacle is a fixed overlay of components that are presented on e
       Slide {slideNumber} of {numberOfSlides}
     </Box>
   </FlexBox>
-))>
+)}>
 ```
 
 ## Scaled Spacing