content/gouk15: add a few more line breaks

Also one missing "by".
This will make Markdown diffs sync better.
Otherwise there's a rewrite on nearly every line
and diff loses track of what matches what.

For golang/go#33955.

Change-Id: I65391a4c768d925797181af1e054373d38510600
Reviewed-on: https://go-review.googlesource.com/c/blog/+/222842
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/content/gouk15.article b/content/gouk15.article
index a780e45..9499358 100644
--- a/content/gouk15.article
+++ b/content/gouk15.article
@@ -18,35 +18,47 @@
 
 Main track:
 
-- Stupid Gopher Tricks, by [[https://twitter.com/enneff][Andrew Gerrand]]
+- Stupid Gopher Tricks,
+  by [[https://twitter.com/enneff][Andrew Gerrand]]
   ([[https://www.youtube.com/watch?v=UECh7X07m6E&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
-- Complex Concurrency Patterns in Go, by [[https://twitter.com/eapache][Evan Huus]]
+- Complex Concurrency Patterns in Go,
+  by [[https://twitter.com/eapache][Evan Huus]]
   ([[https://www.youtube.com/watch?v=2HOO5gIgyMg&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
-- Code Analysis [no reading required], by [[https://twitter.com/francesc][Francesc Campoy]]
+- Code Analysis [no reading required],
+  by [[https://twitter.com/francesc][Francesc Campoy]]
   ([[https://www.youtube.com/watch?v=oorX84tBMqo&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
-- Go kit: a toolkit for microservices [[https://twitter.com/peterbourgon][Peter Bourgon]]
+- Go kit: a toolkit for microservices,
+  by [[https://twitter.com/peterbourgon][Peter Bourgon]]
   ([[https://www.youtube.com/watch?v=aL6sd4d4hxk&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
-- Dependency Management Conundrum, by [[https://twitter.com/goinggodotnet][William Kennedy]]
+- Dependency Management Conundrum,
+  by [[https://twitter.com/goinggodotnet][William Kennedy]]
   ([[https://www.youtube.com/watch?v=CdhucJShJU8&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
 
 Side track:
 
-- Building APIs, by [[https://twitter.com/matryer][Mat Ryer]] ([[https://www.youtube.com/watch?v=tIm8UkSf6RA&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
-- Building a Bank with Go, by [[https://twitter.com/mattheath][Matt Heath]]
+- Building APIs,
+  by [[https://twitter.com/matryer][Mat Ryer]] ([[https://www.youtube.com/watch?v=tIm8UkSf6RA&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
+- Building a Bank with Go,
+  by [[https://twitter.com/mattheath][Matt Heath]]
   ([[https://www.youtube.com/watch?v=cFJkLfujOts&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
-- CockroachDB: Make Data Easy, by [[https://twitter.com/bendarnell][Ben Darnell]]
+- CockroachDB: Make Data Easy,
+  by [[https://twitter.com/bendarnell][Ben Darnell]]
   ([[https://www.youtube.com/watch?v=33oqpLmQ3LE&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
-- Understanding memory allocation in Go, by [[https://twitter.com/DeanElbaz][Dean Elbaz]]
+- Understanding memory allocation in Go,
+  by [[https://twitter.com/DeanElbaz][Dean Elbaz]]
   ([[https://www.youtube.com/watch?v=zjoieOpy5hE&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
-- Whispered Secrets, by [[https://twitter.com/feyeleanor][Eleanor McHugh]]
+- Whispered Secrets,
+  by [[https://twitter.com/feyeleanor][Eleanor McHugh]]
   ([[https://www.youtube.com/watch?v=ViBRx-F4Z2U&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]])
 
-Finally [[https://twitter.com/dgryski][Damian Gryski]] took the stage for the
-closing keynote ([[https://www.youtube.com/watch?v=IiSyFc10Jj0&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]]),
+Finally [[https://twitter.com/dgryski][Damian Gryski]]
+took the stage for the closing keynote
+([[https://www.youtube.com/watch?v=IiSyFc10Jj0&list=PLDWZ5uzn69ezRJYeWxYNRMYebvf8DerHd][video]]),
 giving an overview of how the Go community has evolved over time and hinting
 to what the future might look like.
 
-On the day before the conference [[https://twitter.com/goinggodotnet][William Kennedy]]
+On the day before the conference,
+[[https://twitter.com/goinggodotnet][William Kennedy]]
 gave a full day Go workshop.
 
 It was a great conference, so congratulations to the organizers and see you next year in London!