manuals: replace hyphens with em dashes

Fix some hyphens being improperly used as em dashes.
See https://www.grammarly.com/blog/hyphens-and-dashes/

Using em dashes may also allow Sphinx to hyphenate
and break lines in the best way.

Note that the first character after an em dash not
supposed to be capitalized, unless a specific
rule applies, typically when what follows is a proper noun.

Fix a few misuses of parentheses in following text.

(From yocto-docs rev: 5918f019f63f6e820b1168f4cc001faa1d1cdc6f)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/documentation/bsp-guide/bsp.rst b/documentation/bsp-guide/bsp.rst
index 280b160807..7e17b42886 100644
--- a/documentation/bsp-guide/bsp.rst
+++ b/documentation/bsp-guide/bsp.rst
@@ -1,8 +1,8 @@
 .. SPDX-License-Identifier: CC-BY-SA-2.0-UK
 
-************************************************
-Board Support Packages (BSP) - Developer's Guide
-************************************************
+**************************************************
+Board Support Packages (BSP) --- Developer's Guide
+**************************************************
 
 A Board Support Package (BSP) is a collection of information that
 defines how to support a particular hardware device, set of devices, or