all: reduce use of exclamation marks

To please proselint

Author: bagder

emails/hacking-ring.md

@@ -16,7 +16,7 @@ tried to explain how curl is Open Source and I just provide it free for anyone
 to use and that I do not know anyone at Instagram just because they use my
 code.
 
-Before receiving that email, I had no idea Instagram used curl!
+Before receiving that email, I had no idea Instagram used curl.
 
 On January 19 2016, she writes again. This time she had apparently gotten
 "help" by a friend of hers and now she had more to say.

emails/ps5.md

@@ -50,4 +50,4 @@ about game related problems or services.
     Configuration) Supported Skills can only be used with Claws or
     Daggers looks like nightblade don't recognize that my varunastra counts
     as all weapon types i swapped varunastras for Rive claw for test, and
-    it's working flawlessly!
+    it's working flawlessly.

emails/toyota-corola.md

@@ -64,7 +64,7 @@ occasional email about seemingly random car problems?
 
 ## Opel Insignia
 
-    Dear Daniel Stenberg!
+    Dear Daniel Stenberg
     My name is ****** ****** from Hungary. I write to you, because I have a
     problem with my cars Infotainment system, and I found your name in the
     vehicle instruction manual. I've bought a brand new Opel Insignia Sports

money/companies.md

@@ -9,4 +9,4 @@ best way to get a feature into a project's mainline code.
 
 You will however rarely see a company offer to help with compensation for
 generic bugfixes or other infrastructure things or improvements in the
-project. And if you do, you know you are not in a small project anymore!
+project. If you do, you know you are not in a small project anymore.

people/good-newcomers.md

@@ -8,5 +8,5 @@ changes, remember that being new in the project does not necessarily imply that
 someone is a rookie in any other sense.
 
 Sometimes you get the best patches and help from people you never met before
-and who move on the next day never to come back. The open-source community
-can be a warm and fuzzy place!
+and who move on the next day never to come back. The open-source community can
+be a warm and fuzzy place.

people/negative.md

@@ -16,7 +16,7 @@ criticism.
 When it works, people are silent. When something fails, the crowds roar.
 
 It is good that you get to know about the problems, then you can work on
-fixing them!
+fixing them.
 
 ## When you provide the feedback