exa.man: editorial changes for this man page

Wrong distance between sentences in the input file.

Separate the sentences and subordinate clauses; each begins on a new
line.  See man-pages(7) ("Conventions for source file layout") and
"info groff" ("Input Conventions").

Mark a final abbreviation point as such by suffixing it with "\&".

25:Disables acceleration of uploading pixmap data to the framebuffer. Default: No.

-.-.

Split a punctuation mark from a single argument for a two-font macro

40:.BR xorg.conf(5).

-.-.

Section headings (.SH and .SS) do not need quoting.

38:.SH "SEE ALSO"

-.-.

Output from "test-groff  -mandoc -t -K utf8 -rF0 -rHY=0 -rCHECKSTYLE=10 -ww -z ":

an.tmac:<stdin>:40: misuse, warning: .BR is for at least 2 arguments, got 1
	Use macro '.B' for one argument or split argument.

Originally from: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1095446

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1875>

hw/xfree86/exa/man/exa.man

@@ -5,24 +5,30 @@
 exa \- new 2D acceleration architecture for X.Org
 .SH DESCRIPTION
 .B EXA
-provides a simple API for video drivers to implement for 2D acceleration.  It
+provides a simple API for video drivers to implement for 2D acceleration.
-is a module loaded by drivers, and is not intended to be loaded on its own.
+It is a module loaded by drivers,
+and is not intended to be loaded on its own.
 See your driver's manual page for how to enable
 .BR EXA .
 .PP
 The
 .B EXA
-architecture is designed to make accelerating the Render extension simple and
+architecture is designed to make accelerating the Render extension simple
-efficient, and results in various performance tradeoffs compared to XAA.  Some
+and efficient,
-xorg.conf options are available for debugging performance issues or
+and results in various performance tradeoffs compared to XAA.
-driver rendering problems.  They are not intended for general use.
+Some xorg.conf options are available for debugging performance issues
+or driver rendering problems.
+They are not intended for general use.
 .TP
 .BI "Option \*qEXANoComposite\*q \*q" boolean \*q
-Disables acceleration of the Composite operation, which is at the heart of
+Disables acceleration of the Composite operation,
-the Render extension.  Not related to the Composite extension.  Default: No.
+which is at the heart of the Render extension.
+Not related to the Composite extension.
+Default: No.
 .TP
 .BI "Option \*qEXANoUploadToScreen\*q \*q" boolean \*q
-Disables acceleration of uploading pixmap data to the framebuffer. Default: No.
+Disables acceleration of uploading pixmap data to the framebuffer.
+Default: No.
 .TP
 .BI "Option \*qEXANoDownloadFromScreen\*q \*q" boolean \*q
 Disables acceleration of downloading of pixmap data from the framebuffer.
@@ -31,12 +37,16 @@ Not usable with drivers which rely on DownloadFromScreen succeeding.
 Default: No.
 .TP
 .BI "Option \*qMigrationHeuristic\*q \*q" anystr \*q
-Chooses an alternate pixmap migration heuristic, for debugging purposes.  The
+Chooses an alternate pixmap migration heuristic,
-default is intended to be the best performing one for general use, though others
+for debugging purposes.
-may help with specific use cases.  Available options include \*qalways\*q,
+The default is intended to be the best performing one for general use,
-\*qgreedy\*q, and \*qsmart\*q.  Default: always.
+though others may help with specific use cases.
-.SH "SEE ALSO"
+Available options include \*qalways\*q,
+\*qgreedy\*q,
+and \*qsmart\*q.
+Default: always.
+.SH SEE ALSO
 .BR Xorg (@appmansuffix@),
-.BR xorg.conf(@filemansuffix@).
+.BR xorg.conf (@filemansuffix@).
 .SH AUTHORS
 Authors include: Keith Packard, Eric Anholt, Zack Rusin, and Michel D\(:anzer