docbook: put a space after PS prompts.

Change-Id: I7e55471b19a3dd526d1de1269062853a72e75dec
Reviewed-on: https://code.wireshark.org/review/35226
Reviewed-by: Peter Wu <peter@lekensteyn.nl>

docbook/common_src/typographic_conventions.adoc

@@ -70,7 +70,7 @@ $ git config --global log.abbrevcommit true
 .PowerShell
 ----
 PS$># This is a comment
-PS$>choco list -l
+PS$> choco list -l
 ----
 
 .C Source Code

docbook/wsdg_src/WSDG_chapter_quick_setup.adoc

@@ -142,7 +142,7 @@ install Python into the default location (_C:\Python37_).
 Alternatively you can install Python using Chocolatey:
 
 ----
-PS$>choco install -y python3
+PS$> choco install -y python3
 ----
 
 Chocolatey installs Python in _C:\Python37_ by default.
@@ -155,9 +155,9 @@ https://www.activestate.com/ and install Perl into the default location.
 Alternatively you can install Perl using Chocolatey:
 
 ----
-PS$>choco install -y strawberryperl
+PS$> choco install -y strawberryperl
 # ...or...
-PS$>choco install -y activeperl
+PS$> choco install -y activeperl
 ----
 
 [[ChSetupGit]]
@@ -221,7 +221,7 @@ the default location.  Ensure the directory containing cmake.exe is added to you
 Alternatively you can install CMake using Chocolatey:
 
 ----
-PS$>choco install -y cmake
+PS$> choco install -y cmake
 ----
 
 Chocolatey ensures cmake.exe is on your path.
@@ -238,7 +238,7 @@ and the User’s Guide.
 The easiest way to install them on Windows is via Chocolatey:
 
 ----
-PS$>choco install -y asciidoctorj xsltproc docbook-bundle
+PS$> choco install -y asciidoctorj xsltproc docbook-bundle
 ----
 
 Chocolatey ensures that asciidoctorj.exe and xsltproc.exe is on your
@@ -253,7 +253,7 @@ and win_bison.exe is on your path.
 Alternatively you can install Winflexbison using Chocolatey:
 
 ----
-PS$>choco install -y winflexbison
+PS$> choco install -y winflexbison
 ----
 
 Chocolatey ensures win_flex.exe and win_bison.exe are on your path.

docbook/wsdg_src/WSDG_chapter_sources.adoc

@@ -174,8 +174,8 @@ To install it from Chocolatey run
 --
 ----
 # If you have not already, install Python 3 first and then *restart* the shell.
-PS$>choco install -y python3
-PS$>choco install -y git-review -source python
+PS$> choco install -y python3
+PS$> choco install -y git-review -source python
 # Make sure that "git-review" is present in our path (edit the version as needed).
 PS$>$userpath = [Environment]::GetEnvironmentVariable("Path", [EnvironmentVariableTarget]::User)
 PS$>$userpath += ";C:\Python37\Scripts"

docbook/wsdg_src/WSDG_chapter_tools.adoc

@@ -852,7 +852,7 @@ _win_flex_.
 
 [source,cmd]
 ----
-PS:\>choco install winflexbison
+PS:\> choco install winflexbison
 ----
 
 Native packages are available from other sources such as
@@ -938,7 +938,7 @@ copy status.  You can install it using Chocolatey:
 
 [source,cmd]
 ----
-PS:\>choco install poshgit
+PS:\> choco install poshgit
 ----
 
 [[ChToolsGitGUI]]