blog: Make minor formatting fixes to Wire post

Change-Id: I0d3ae8456eae6dc98429874746789479925223a8
Reviewed-on: https://go-review.googlesource.com/c/140718
Reviewed-by: Andrew Bonventre <andybons@golang.org>
diff --git a/content/wire.article b/content/wire.article
index c024620..cce8003 100644
--- a/content/wire.article
+++ b/content/wire.article
@@ -55,7 +55,7 @@
 
     var UserStoreSet = wire.ProviderSet(NewUserStore, NewDefaultConfig)
 
-Injectors are generated functions that call providers in dependency order. You write the injector's signature, including any needed inputs as arguments, and insert a call to wire.Build with the list of providers or provider sets that are needed to construct the end result:
+_Injectors_ are generated functions that call providers in dependency order. You write the injector's signature, including any needed inputs as arguments, and insert a call to `wire.Build` with the list of providers or provider sets that are needed to construct the end result:
 
     func initUserStore() (*UserStore, error) {
     	// We're going to get an error, because NewDB requires a *ConnectionInfo