improving the docs breadcrumb example links (#5533)

Author: ktabors

packages/@react-aria/breadcrumbs/docs/useBreadcrumbs.mdx

@@ -181,7 +181,7 @@ function BreadcrumbItem(props) {
 
 <Breadcrumbs>
   <BreadcrumbItem href="/">Home</BreadcrumbItem>
-  <BreadcrumbItem href="/react-aria">React Aria</BreadcrumbItem>
+  <BreadcrumbItem href="/react-aria/">React Aria</BreadcrumbItem>
   <BreadcrumbItem>useBreadcrumbs</BreadcrumbItem>
 </Breadcrumbs>
 ```
@@ -197,7 +197,7 @@ Breadcrumbs can be disabled using the `isDisabled` prop, passed to each disabled
 ```tsx example
 <Breadcrumbs>
   <BreadcrumbItem href="/" isDisabled>Home</BreadcrumbItem>
-  <BreadcrumbItem href="/react-aria">React Aria</BreadcrumbItem>
+  <BreadcrumbItem href="/react-aria/">React Aria</BreadcrumbItem>
   <BreadcrumbItem>useBreadcrumbs</BreadcrumbItem>
 </Breadcrumbs>
 ```

packages/@react-spectrum/breadcrumbs/docs/Breadcrumbs.mdx

@@ -85,8 +85,8 @@ By default, interacting with an item in Breadcrumbs triggers `onAction`. Items m
 ```tsx example
 <Breadcrumbs>
   <Item href="/">Home</Item>
-  <Item href="/react-spectrum">React Spectrum</Item>
-  <Item href="/react-spectrum/Breadcrumbs">Breadcrumbs</Item>
+  <Item href="/react-spectrum/">React Spectrum</Item>
+  <Item href="/react-spectrum/Breadcrumbs.html">Breadcrumbs</Item>
 </Breadcrumbs>
 ```
 

packages/react-aria-components/docs/Breadcrumbs.mdx

@@ -47,7 +47,7 @@ import {Breadcrumbs, Breadcrumb, Link} from 'react-aria-components';
 
 <Breadcrumbs>
   <Breadcrumb><Link href="/">Home</Link></Breadcrumb>
-  <Breadcrumb><Link href="/react-aria">React Aria</Link></Breadcrumb>
+  <Breadcrumb><Link href="/react-aria/">React Aria</Link></Breadcrumb>
   <Breadcrumb><Link>Breadcrumbs</Link></Breadcrumb>
 </Breadcrumbs>
 ```
@@ -231,7 +231,7 @@ When breadcrumbs are used as a main navigation element for a page, they can be p
 <nav aria-label="Breadcrumbs">
   <Breadcrumbs>
     <Breadcrumb><Link href="/">Home</Link></Breadcrumb>
-    <Breadcrumb><Link href="/react-aria">React Aria</Link></Breadcrumb>
+    <Breadcrumb><Link href="/react-aria/">React Aria</Link></Breadcrumb>
     <Breadcrumb><Link>Breadcrumbs</Link></Breadcrumb>
   </Breadcrumbs>
 </nav>
@@ -246,7 +246,7 @@ Breadcrumbs can be disabled using the `isDisabled` prop. This indicates that nav
 ```tsx example
 <Breadcrumbs isDisabled>
   <Breadcrumb><Link href="/">Home</Link></Breadcrumb>
-  <Breadcrumb><Link href="/react-aria">React Aria</Link></Breadcrumb>
+  <Breadcrumb><Link href="/react-aria/">React Aria</Link></Breadcrumb>
   <Breadcrumb><Link>Breadcrumbs</Link></Breadcrumb>
 </Breadcrumbs>
 ```
@@ -276,7 +276,7 @@ Individual breadcrumbs can also be disabled by passing the `isDisabled` prop to
 ```tsx example
 <Breadcrumbs>
   <Breadcrumb><Link href="/">Home</Link></Breadcrumb>
-  <Breadcrumb><Link isDisabled href="/react-aria">React Aria</Link></Breadcrumb>
+  <Breadcrumb><Link isDisabled href="/react-aria/">React Aria</Link></Breadcrumb>
   <Breadcrumb><Link>Breadcrumbs</Link></Breadcrumb>
 </Breadcrumbs>
 ```