Use proper version string in tutorial templates

Removes the "r" prefix from all version strings.  The text tells users
not to put prefix characters in the version number, but then proceeds to
do so anyway.

Author: HiPhish

src/packaging/j4-dmenu-desktop.md

@@ -740,7 +740,7 @@ and `do_install()`, because their CWD will be set to `$wrksrc` and not
 ```bash
 # Template file for 'j4-dmenu-desktop'
 pkgname=j4-dmenu-desktop
-version=r2.18
+version=2.18
 revision=1
 hostmakedepends="git cmake"
 makedepends=""
@@ -814,7 +814,7 @@ fixed template:
 ```bash
 # Template file for 'j4-dmenu-desktop'
 pkgname=j4-dmenu-desktop
-version=r2.18
+version=2.18
 revision=1
 hostmakedepends="git cmake"
 makedepends=""
@@ -1025,7 +1025,7 @@ This is the old template:
 ```bash
 # Template file for 'j4-dmenu-desktop'
 pkgname=j4-dmenu-desktop
-version=r2.18
+version=2.18
 revision=1
 hostmakedepends="git"
 makedepends=""
@@ -1062,7 +1062,7 @@ This is the template with `build_style=cmake`:
 ```bash
 # Template file for 'j4-dmenu-desktop'
 pkgname=j4-dmenu-desktop
-version=r2.18
+version=2.18
 revision=1
 hostmakedepends="git cmake"
 build_style=cmake
@@ -1129,7 +1129,7 @@ Here is the modified template:
 ```bash
 # Template file for 'j4-dmenu-desktop'
 pkgname=j4-dmenu-desktop
-version=r2.18
+version=2.18
 revision=1
 # git is still needed
 hostmakedepends="git"
@@ -1183,7 +1183,7 @@ Here is the modified template:
 ```bash
 # Template file for 'j4-dmenu-desktop'
 pkgname=j4-dmenu-desktop
-version=r2.18
+version=2.18
 revision=1
 hostmakedepends="git"
 build_style=cmake
@@ -1268,7 +1268,7 @@ Here is the modified template:
 ```bash
 # Template file for 'j4-dmenu-desktop'
 pkgname=j4-dmenu-desktop
-version=r2.18
+version=2.18
 revision=1
 # git is removed from hostmakedepends
 makedepends="catch2"