docs: update _pkgdown.yml

Change labels on navbar

.github/analyst_guide_summary.md

@@ -78,7 +78,7 @@ The `create_bar()` function also accepts `hrvar`, `return` and `mingroup` argume
 
 ## Customizing plots
 
-All plots in *wpa* are [ggplot objects](https://rafalab.github.io/dsbook/ggplot2.html). This means you can customize them by adding ggplot arguments and layers. For instance, you can change the title of a `collaboration_summary()` plot:
+All plots in **wpa** are [ggplot objects](https://rafalab.github.io/dsbook/ggplot2.html). This means you can customize them by adding ggplot arguments and layers. For instance, you can change the title of a `collaboration_summary()` plot:
 
 ```R
 sq_data %>% collaboration_summary() + ggtitle("This is a custom title")

_pkgdown.yml

@@ -28,13 +28,13 @@ navbar:
         href: analyst_guide.html
       - text: Getting Started
         href: analyst_guide_getting_started.html
-      - text: Summary analysis
+      - text: Summary Functions
         href: analyst_guide_summary.html
-      - text: Distribution analysis
+      - text: Distribution Functions
         href: analyst_guide_distribution.html
-      - text: Trend analysis
+      - text: Trend Functions
         href: analyst_guide_trend.html
-      - text: Network analysis
+      - text: Network Functions
         href: analyst_guide_network.html
     reference:
       text: Reference